lunedì 30 marzo 2020

The Megalithic Ruins of Ancient Mexico - Part V

The Forgotten Tombs of Guirún and the search for the largest megalith in North America

The valley of Tlacolula in Central Oaxaca, Mexico, is home to one of the largest concentrations of megalithic monuments in Mesoamerica. The origin of these structures is conventionally attributed to the Zapotec and Mixtec peoples, who occupied the area since at least 500 B.C. Their largest and most important sites were Monte Alban and Mitla, characterized by a sophisticated stone architecture, magnificent underground tombs and advanced metalworking techniques.
The palaces and underground tombs of Mitla, with their intricate stone decoration, would cause the greatest impression in the early Spanish Conquistador and in later travelers during much of the 17th and 18th Century. Early chroniclers marveled at the extraordinary workmanship of these structures and the immense size of the stones – buildings which were “prouder and more magnificent than any that they had hitherto seen in New Spain. [1]”
These early chroniclers described vast halls supported by round pillars consisting of one stone, and immense doorways built with huge monolithic lintels and jambs. An even greater marvel were the stone mosaics that ornated the walls, consisting of an infinite number of small rectangular stones “as smooth and regular as if they had all come from one mould”. And, more wonderful still, these stones were “adjusted without a single handful of mortar”, a feat “inexplicable even to the greatest architects”. All of this was accomplished, according to another source, wholly “without tools, with nothing but hard stones and sand. [2]”
The palaces of Mitla and their impressive stone architecture have been covered at length in a previous article on this blog, which can be accessed here.

A few years ago I came across a brief description and some black and white pictures of what appeared to be an enormous cruciform megalithic structure in the mountains near Mitla. The report in question had been published in 1909 by the American archaeologist Marshall H. Saville and only named the site as Guiaroo [3].
Initial enquiries into the location of the mysterious ruin in 2017 turned out to be largely unsuccessful. We were, however, able to locate another interesting megalithic tomb on the grounds of the abandoned Hacienda of Xaaga (See here for a description of our find).
Finally, in March of 2020 our friend Ludovic Celle from Oaxaca City, who had himself visited the site a couple of years earlier and provided GPS coordinates, put us in touch with a local guide, Misael Martinez, who also knew the location of the ruins. His experience proved invaluable not only in locating the cruciform structure, but also a second tomb and various other ruined structures not mentioned by Saville in his initial report of the site.  
The "Palace" of Guirún, in the Upper Group. The Temple of the Two Rooms appears as a large stepped pyramid on the opposite side of the rectangular Plaza. The cruciform chamber is located on a ridge less than 200 meters from the Palace. [Photo by Author]
The ruins of Guirún (or Guiaroo) are located on a hilltop some 5 kilometers to the NE of the little town of Xaagá, amidst spectacular cliffs and deep canyons. The site was studied by Gary M. Feinman and Linda M. Nicholas in 2004, which conducted a comprehensive survey of the remaining structures but did not conduct any excavations [4].
The largest building is called the “Palace of the Two Rooms”. It is in fact a group of four ceremonial structures facing a square plaza with a large terraced pyramid on the eastern side. The temple on the top of the pyramid is still in a reasonable state of preservation and consists of two large rooms approached by a stairway, from which the entire complex receives its name. The plan of the structure is similar to that of the largest palaces at Mitla, but lacks the same high-quality workmanship and stone decoration. It is quite possible that underground tombs may exist under each of the ceremonial platforms to the North and to the East. There are also traces of fortifications and of what could be a small Mesoamerican ball game to the South of the palace.
The cruciform structure, often called a “tomb”, is found less than 200 meters from the main Palace, on another low ridge covered in bushes and shrubs, next to a ruined pyramidal mound some 10 meters high.
A view of the Cruciform chamber looking North. [Photo by Author]
Another view of the Cruciform chamber looking East. Note the immese size of the stone blocks forming the walls and the perfect jointing along the exposed face. [Photo by Author]
There are few words to describe a structure so entirely unique in the panorama of Mesoamerican architecture. Its measurements are given by Saville as 32.8 ft. (10 meters) along the East-West axis and 28.6 ft. (8.7 meters) along the North-South axis. It is in the shape of a cross, precisely oriented to the cardinal directions, and has the entrance to the West. The walls, up to 2.5 meters (7.5 ft) high, consist of enormous megalithic stone blocks laid without mortar or cement. The largest stone block, located on the southern wall of the western arm, measures 12.5 by 3.3 by 3 ft, or approximately 3.8 by 1.0 by 0.9 meters, weighting an estimated 10 tons or more in its finished state. A total of 52 stone blocks were employed for the construction of the chamber, which remained unroofed. The interior walls, with the sole exception of the terminal wall of the southern arm, are entirely decorated with intricate geometric pattern resembling the mosaic stonework at Mitla – except that the carvings were applied here directly on the stone surface. The patterns run on three bands, the ones at the bottom and the top resembling waves or swastikas, with a labyrinthine design in the middle band. Traces of red and white paint still survive in places.
The large stones were pinched into place by means of holes in the back of them, where levers were most certainly inserted. One huge stone block lying near the chamber also shows two enigmatic U-shaped bosses in relief that served possibly for transportation.
The author posing next to the largest stone block on the souther wall of the western arm. [Photo by Author]
A close-up view of the largest stone block on the southern wall of the western arm. Note the curious embossment in the middle, which probably served to ensure a tight fit the other stones. Similar features have been documented at other megalithic sites, such as at Ollantaytambo in Peru. [Photo by Author]
Another view of the western and southern arm of the cruciform structure, each consisting of a single stone. Notice the holes in the back of the stones, possibly for the insertion of levers. [Photo by Author]
It has been suggested that the “tomb” was left unfinished, due to the presence of several large construction blocks abandoned in the vicinity and the absence of a roof. This seems to contrast, however, with the evidence from the exquisitely carved decoration and traces of paint on the inside. Saville remarked that the debris filling the chamber at the time of discovery did not contain the slightest trace of human remains or other pottery fragments by which the structure could be dated. There is also no trace of a floor, so it is not clear whether the structure actually rests on bedrock or continues underground. Compass readings show that the longest arm is oriented about 17 degrees to the East of North. As such, Guirún would join a long list of Mesoamerican sites with anomalous orientations, including Teotihuacan, Chichen Itzá and Tula, which are all oriented between 15.5 and 17 degrees to the East of North.
Our friend Ludovic Celle from Oaxaca also noticed a close similarity between the geometric patterns that ornate the walls of the cruciform structure of Guirún and those of the Palace of the Columns at Mitla. These differ significantly from the mostly plain decoration of other underground tombs, which only contain isolated mosaic panels. Ludovic also created a great 3D reconstruction of the tomb which may be accessed from the following link:

It is possible that the cruciform structure of Guirún was therefore never intended as a tomb, but as a ritual chamber or astronomical observatory.  
A view of the interior of the cruciform chamber, looking East, from which it is possible to appreciate the remarkable decoration on the inside. [Photo by Author]
Another view from the interior of the cruciform chamber, looking North. It is possible to appreciate the three different patterns that form the lower, middle and upper band. [Photo by Author]
At a distance of about one mile from the Upper Group and the cruciform structure, we found the remnants of another ruined palace supported by massive stone embankments. Inside the courtyard of this second palace we found the entrance to another tomb, which was also briefly described by Saville. This is a cruciform structure, measuring some 24 by 22 ft, or about 7.3 by 6.8 meters along its two horizontal arms, built entirely underground of loose cemented stones covered with a roof of large megalithic flagstones. The workmanship of this structure, which was most certainly a tomb, appears rather crude if compared to the other examples of cruciform tombs from Mitla and Xaaga, and does not share the least similarity with the exquisite finishing of the cruciform structure in the Upper Group, neither in the use of large megalithic stones nor in the quality of the decoration. The walls were covered in plaster and painted bright red and white. Only traces of the original plastering and paint remain. Of a third megalithic tomb described by Dupaix in 1805 as containing a monolithic stone pillar in the middle and carved mosaic panels, we could find no trace.   
The very narrow entrance to the other small cruciform chamber in the Lower Group of ruins at Guirún [Photo by Author]
A view of the interior of the small cruciform chamber in the Lower Group. The roof is formed of enormous megalithic stone slabs, but the general construction appears quite crude. The walls still retain traces of red and white paint. [Photo by Author]
Our attention was then drawn to some of the nearby quarries. A large prehispanic quarry was first reported by archaeologist Nelly Robles in 1994 at a site known as La Cuadrada, about one hour from Guirún, containing some 57 worked pieces. Unfortunately, the limited time available did not allow for a thorough examination of this site. Most of the stones seem to be of comparable size to some of the largest stone blocks at Guirún. We explored instead another stone quarry located near the village of Xaagá, near a rock face known simply as La Peña, where prehistoric rock art is also visible. We found there one very large stone, possibly a lintel, measuring approximately 4 by 1.5 by 1.25 meters. The approximate weight of the stone would be in the range of 15 to 20 tons. Our guide drew our attention to the fact that most quarries are located in close proximity to small streams, implying that water was perhaps employed to facilitate the cutting.
A view of the megalithic stone quarry at the site of La Peña, near the village of Xaaga. [Photo by Author]
The largest stone block still lying in the quarry at the site of La Peña, measuring some 4 meters long - most likely an unfinished lintel or pillar. [Photo by Author]
We also learnt of one immense stone block lying on a mountain slope near the village of Unión Zapata, some 2 kilometers to the East of Mitla. The site is known as Guigosj, meaning “fallen stones”. Archaeologist Nelly Robles describes at least 6 huge stones “of uncommon size” lying horizontally in the quarry. In her 1994 report, Dr. Robles observed that “at first, the enormous size and monumentality of the stones made us doubt that these could have been quarried intentionally; yet the perfection of the cuts and their geometric shape indicated otherwise [5].” The largest stone would have had the enormous dimensions of 12 meters long by 4 meters wide and 2.5 meters high. Assuming a specific weight of the stone between 2.3-2.5 tons per cubic meter, its weight could be close to 300 tons.
Also in this case, however, time limitations did not allow us to fully explore the site, which we will leave for a future expedition.
Various large stones found abandoned in the vicinity of the cruciform structure in the Upper Group of ruins of Guirún. Note the holes in the back of the large lintel and the curious U-shaped bosses on the other stone block in the foreground - probably another transporation device. [Photo by Author] 
Judging from the enormous number of stones still abandoned in the quarries, and their immense size, it is clear that a colossal building program in the valley of Tlacolula and Mitla was suddenly interrupted and remained unfinished. In her 1994 study, Dr. Nelly Robles documented at least nine major quarries in the area of Mitla alone, containing an estimated 200 megalithic stone blocks in various stages of completion, the majority of which in the 5-10 tons range. This would be enough to build at least four cruciform structures like the one at Guirún.
It is not clear what circumstances led to the abandonment of such a colossal building program. When the first Spanish Conquistadors visited Mitla in the 1520’s, they found the city already in ruins, after the Aztecs had conquered and sacked it in 1494. Perhaps it was the Aztec conquest that caused the abandonment of the quarries, or maybe this occurred much earlier. A recent 2019 study found evidence of a massive landslide to the north of Mitla that may have contributed to the abandonment of the site and the collapse of Zapotec civilization. The same study also found evidence of what could be buried pyramids or structures under the landslide, suggesting that the avalanche could have occurred within historical times [6].

Another mystery is the technique employed for cutting and transporting the enormous stone blocks. The stone itself is a type of andesitic toba, which would have required stone or metal tools for its extraction and polishing. A further question is posed by the intricate grecques and ornamentation found on some of the blocks – the finest being those that decorate the walls of the cruciform structure of Guirún. The perfect right angles and minute details suggest almost the use of molds, as the design is always repetitive and perfect, without the slightest error or deviation. One may also consider the possibility that the stone is in fact a type of geopolymer and that it was cast into place rather than quarried and transported. This possibility may only be confirmed by future studies and analyses.
While this is only a suggestion for now, there is something in the obsessive repetition of geometric patterns and designs in the palaces of Mitla and the cruciform structure of Guirún that suggests almost a form of writing or a mathematical code, whose true meaning may however always escape us.
A close-up view of some of the geometric patterns in the interior of the cruciform structure of Guirún. Were these intricate pattners carved or molded on the stone? [Photo by Author]
The ruins of the valley of Tlacolula and Mitla represent a unique example of megalithic architecture displaying a workmanship and a tendency towards monumentality unknown in the rest of Mesoamerica. These magnificent structures appear as if out of nowhere, and are the expression of a tradition of working in stone that had already become extinct long before the time of the Spanish conquest.
[1] Toribio de Benavente Motolinia (1482-1568), Historia de los Indios de la Nueva España
[2] Francisco de Burgoa, Geográfica Descripción, 1674
[3] Marshall H. Saville, The Cruciform Structures of Mitla and Vicinity, Putnam, 1909
[4] Gary M. Feinman and Lind M. Nicholas, Hilltop Terrace Sites of Oaxaca: Intensive Surface Survey at Guirún, El Palmillo and the Mitla Fortress, Field Museum of Natural History, Chicago, 2004
[5] Nelly M. Robles Garcia, Las Canteras de Mitla, Vanderbilt University, 1994, pp. 17-19
[6] V. H. Garduño-Monroy, et al., The Mitla Landslide: An event that changed the fate of a Mixteco/ Zapoteco Civilization in Mesoamerica, International Journal of Geophysics, vol. 2019,

Note: All the pictures on this page are intended for non-commercial use only and may be reproduced on other websites or publications so long as the source is cited. Exploration of the site was conducted with the help of certified guides to ensure the preservation of archaeological remains and the natural environment. 

venerdì 9 agosto 2019

The Lost City of the Eagle

A mysterious Olmec presence in the Mixteca

     Huehuepiaxtla is a small town located in the heart of the Mixteca region, 150 kilometers (100 miles) south of Puebla. Overlooking the town is a huge isolated peak, called by locals ‘La Peña’ – The rock. Tradition has it that the mountain was home to the first inhabitants of the region, who were later turned into stone by the gods.
The municipal president of Huehuepiaxtla, Dr. Florencio Dominguez (left) and our guide German (right) near a section of megalithic stone wall decorated with the image of an eagle on the summit of the Great Rock of Huehuepiaxtla [Photo by Author]
I first became interested in this mysterious site after coming across pictures online of what appeared to be several broken stelas and bas-reliefs [1]. There were also rumors of more extensive ruins near one of the peaks, including great stone walls and a broken obelisk. After contacting the local authorities, the municipal president Dr. Florencio Domínguez was kind enough to arrange for a guide and equipment to climb the peak and document whatever ruins we might find on top.

Upon arriving in Huehuepiaxtla, the summit of the Peña was still entirely shrouded in the morning mist. After the necessary preparations, we approached the cliff from the West. The peak now loomed directly a full 450 meters (1,470 ft) above us and the Rio Mixteco running below. Luckily, no rain had fallen in the past few days, so the rock was quite dry. Florencio explained that had it rained the night or the day before, the rock would have been too slippery to climb. Our guide, German, was an expert climber and one of very few people in town who know the difficult trail to the top.
The Great Rock of Huehuepiaxtla, as seen from the Mixtec River running below and around it. [Photo by Author]
Already at 10:00 am the temperature was nearly 30°C. Near the base of the cliff, we walked through a large flat area, trapezoidal in shape, which appeared to have been artificially leveled with steep embankments on all sides. Some overgrown mounds on the western side suggested this might have been a ceremonial plaza flanked by pyramids.

From there, a small trail led directly to the base of the cliff. Some steps and ledges had been originally carved in the rock, but these were now very worn. The path required to go through some very steep sections of exposed bedrock, which made the climb particularly difficult even in dry weather.
The steep trail leading up to the summit of the Rock of Huehuepiaxtla. [Photo by Author]
Another section of the difficult trail along the exposed cliff face, overlooking the village of Huehuepiaxtla and the Mixtec River below. [Photo by Author]
Along the trail we observed several pieces of obsidian and fragments of pottery. About half-way up, we passed through a set of terraces with massive stone retaining walls. The quality of the visible stonework varied, with some sections composed of huge, finely fitted rectangular stone blocks and others formed of rough boulders. The stone appeared to be a kind of basalt, which was probably sourced locally from the slopes of the great rock itself. 
Dr. Florencio holding a piece of obsidian, probably a small arrowhead, found along the trail to the summit. Note: No artifact was removed during the exploration, and all pieces were returned to their original location. [Photo by Author]
The handle of a broken ceramic vessel. Note: No artifact was removed during the exploration, and all pieces were returned to their original location. [Photo by Author] 
A partially exposed section of a megalithic stone wall about half-way towards the summit of the Great Rock. Some of the larger stones in the picture measure up to 3 meters (10 ft) long. The style of construction is reminiscent of Chimalacatlan and Huaxtla, two early Pre-Classic sites in the state of Morelos.[Photo by Author]
A retaining wall formed of large roughly shaped boulders laid without cement. [Photo by Author]
Some large broken sections of megalithic stone walls, like the one in the picture, suggest the existence of buried monumental structures on this side of the hill. [Photo by Author]
After some more climbing, we finally reached the summit at about noon. The summit consists in fact of a small, mostly level plateau or ridge in between two separate peaks, one to the East and the other to the West. This plateau contained extensive remains of ancient constructions and some overgrown mounds. However, the thick vegetation made it impossible to make out but the general outline of most of the structures.
The small cross located on one of the peaks of the Great Rock of Huehuepiaxtla, overlooking the town and the river below. [Photo by Author]
A rock ledge overlooking the Mixtec River 450 meters below. Note how the rock appears to have been artificially leveled and cut into steps. Several glyphs and rock carvings can be found in this area. [Photo by Author]
Opening our way with machetes through the thick undergrowth we reached the first of the two peaks, where a small cross has been erected that is visible from the town below. From there, it was possible to descend towards a rock ledge directly overlooking the river 450 meters (1,470 ft) below. The ledge appeared to have been artificially leveled and carved into steps or terraces, each just a few meters wide. Various glyphs and symbols were apparently carved on the rock, suggesting that this was in fact a very important point in the sacred geography of the area. Among the glyphs that we could make out were two apparent calendar symbols including the numeral ‘9’ and the figure of an eagle or vulture. The uppermost terrace, where the eagle bas-relief could be seen, was once delimited by a massive megalithic stone wall that emerged directly from the natural bedrock. The joints between the stones looked extremely tight, except for a point where some tree roots had partially dislodged a large vertical block. According to our guide, the peculiar arrangement of the stones around the eagle glyph indicated a hidden passageway. What made the existence of a passage through the rocks very likely was the presence of another bas-relief, depicting a crouching jaguar, which appeared to continue beyond the joint into the wall. From this point, it was also possible to see the entrance of another cave near the base of the cliff. Local traditions speak of vast subterraneans under the Peña. One of these is said to be covered in carvings and mysterious figures, but no entrance to these subterraneans is presently known.
A mysterious glyph on one of the rocks near the eagle carving. [Photo by Author]
A section of what appears to be a megalithic stone wall with the carving of an eagle and a calendar glyph with the numeral '9'. Note the peculiar arrangement of the stones to the right of the carving, allegedly concealing the entrance to a subterranean. [Photo by Author]
A close-up view of the eagle glyph on the same rock face. The figure of a jaguar can be faintly made out to the right of it. [Photo by Author]
Another glyph near the edge of the rock overlooking the Mixtec River some 450 meters below. The glyph is inscribed inside a circle and is also accompanied by the numeral '9', represented by a bar with four dots. [Photo by Author]
From this rock ledge, we continued along a trail overlooking the precipice in the direction of a small plateau separating the two peaks. There, in a small plaza facing an ancient overgrown pyramid lay one of the most fascinating monuments of antiquity in this parts of Mexico. It was a huge fallen stela, some 3 meters (10 ft) long, carved on one side with the image of an undefinable creature. It had slightly open legs, from which emerged what appeared to be a tail. Hands and feet looked like claws, but the creature appeared otherwise humanoid. The head could be that of a bat, with large pointed ears. The presence of clearly marked breasts suggested that the subject represented was a female. It was a unique type of stela, for the deeply embossed relief and the frontal depiction of the main figure. The stela was probably part of a pair that had been once erected in front of the main pyramid. Another fragmentary stela, now in the main square of Axutla, is also said to have been found at Huehuepiaxtla, and shows a very similar iconography. In this latter case, however, the figure depicted looks clearly human, possibly a dancer. The stela of Axutla is also significantly smaller, and the carving much shallower and less precise.
A large fallen stela in front of the main pyramid on the summit of the Great Rock of Huehuepiaxtla. The figure depicted is vaguely anthropomorphic, with claws in the place of hands and a curious head with pointed ears resembling a bat. [Photo by Author]
Another view of the same fallen stela with a smaller stone block that may have been its base or an offering table, also near the base of the main pyramid. [Photo by Author]
A view of what appears to be the main pyramid of the site, with its partially exposed stone core. [Photo by Author]
After passing the main pyramid, the trail led in the direction of the second peak. About half-way up towards the summit, we found a pair of strange megalithic arrangements. The first apparently consisted of some huge boulders, each probably weighting 1 ton or more, roughly piled up to form some sort of cairn about 3 meters (10 ft) high. A short distance from this first arrangement was a second one, consisting of even larger basalt columns stacked together as to form a fence. I found the resemblance to the famous Olmec megalithic tomb of La Venta particularly striking, especially for the use of prismatic basalt columns. From there, we entered another small plaza delimited on three sides by a stone wall. The wall had entirely collapsed, but the debris still reached up to 1 meter (3 ft) in height. The purpose of the wall was probably to delimit a sacred precinct in front of another very ruined pyramid that occupied the summit of the second peak. A large hole could be seen where a temple would have stood on top of the pyramid, probably dug by looters in search of treasure. From this vantage point it was possible to see at a distance of some 5 kilometers another giant rock, known as the Peña de Tlaxcuapan, where more ancient ruins are said to exist. 
A cairn formed of huge megalithic stone boulders on the summit of the Great Rock of Huehuepiaxtla. It is possible that these stones once formed part of some large fallen structure. [Photo by Author]
A curious megalithic arrangement consisting of several basalt columns, each up to 3 meters (10 ft) high. This is reminiscent of the famous Olmec tomb of La Venta, probably early Pre-Classic. [Photo by Author]
A view of the Rock of Tlaxcuapan from the summit of small pyramid that occupies the second peak of the Great Rock of Huehuepiaxtla. [Photo by Author]
We then began a difficult descent along a small overgrown pathway towards a spot where our guide German claimed a huge broken stela or obelisk could be found. After a turn, we found ourselves in front of an immense stone wall, formed of huge megalithic blocks up to 4 meters (13 ft) long, laid in regular courses without mortar or cement. The wall apparently formed the side of a large stone platform or terrace, on top of which rose a second platform also lined with great megalithic stones. The overall impression was one of extraordinary antiquity. Near the base of the lower platform we found another curious arrangement of basalt columns, each probably 3 or 4 meters  (10-13 ft) long, placed horizontally as to form a kind of bridge. We could not determine whether the columns actually formed part of the roof of some buried structure, but this seemed very likely. A short distance from there we reached the ‘Stone of Sacrifice’. This was in fact an enormous broken stela, which may have stood up to 6 meters (20 ft) tall when still erect, but which now lay broken in four parts. The decoration on the stela betrayed a clear Olmec influence. Although now badly defaced, it probably depicted a ruler crowned by what appeared to be a very elaborate headdress.
A set of huge monolithic basalt columns laid horizontally as to form a sort of bridge, possibly the roof of a tomb. [Photo by Author]
A section of a massive megalithic wall forming the side of a terrace. Some of the stones pictured above measure over 3 meters (10 ft) long, with a weight of several tons. [Photo by Author]
Another view of the same megalithic terrace, formed of massive prismatic basalt columns laid in rows without mortar or cement. Probably early Pre-Classic. [Photo by Author]
More ruined megalithic stone walls, partially covered by vegetation. [Photo by Author]
A view of some other megalithic structures on the upper terrace, also built of huge blocks of prismatic basalt laid without mortar or cement. [Photo by Author]
The great broken stela known as the 'Stone of Sacrifice' at the base of the lower terrace. The fragment on the left shows a badly eroded head and torso, while the larger fragment on the right contains part of an elaborate headdress. The style of the sculpture is typically Olmec. When erect, the stela (now broken in at least four pieces) would have stood at least 6 meters (21 ft) tall. [Photo by Author]
More Olmec-style carvings could be found near the base of the Peña. These appeared to have also been part of another large broken stela. A glyph accompanied by the numeral ‘4’ could be seen on one of the fragments.
Fragments of a large broken stela found near the base of the Rock of Huehuepiaxtla. A glyph with the numeral '4' can be clearly made out in the center of the picture. [Photo by Author]
More fragments of the same broken stela, with apparently Olmec carvings. [Photo by Author]
The rock of Huehuepiaxtla was certainly a very important site in ancient times, and it is a pity that so little is known about it. Everything suggests that this was a major ceremonial center in the Pre-Classic period, probably as early as 1,000 B.C., and may be related to the other Olmec sites in the region, at Chalcatzingo, Chimalacatlan, Huaxtla, Teopantecuanitlán and Juxtlahuaca.

The possibility of a connection between these sites is further suggested by the fact that a line drawn through Chimalacatlán and Huaxtla (as described in a previous article [2]) leads directly to the rock of Huehuepiaxtla. A continuation of the same line crosses the nearby rock of Tlaxcuapan and ends at Apoala. This alignment of five sites, all displaying unusual megalithic architecture, appears to be hardly coincidental.
It is only to be hoped that the Mexican Institute of History and Anthropology (INAH) also gathers an interest in this now forgotten site and helps preserve it from looting for the benefit of future generations.  
A herd bathing in the Mixtec River, at the base of the Great Rock of Huehuepiaxtla. [Photo by Author]
Another view of the Rock of Huehuepiaxtla, standing in monumental isolation in the hilly landscape of the Mixteca. [Photo by Author]
Part of a broken stela, allegedly from Huehuepiaxtla, found in the main square of the town of Axutla. [Photo by Author]
Another stone fragment in the main square of Axutla, possibly from the same stela. [Photo by Author]

Unfortunately, no bibliography could be found concerning Huehuepiaxtla and its ruins, as the site is presently unpublished and no mention of it exists in academic literature. 

[1] La Gran Peña, origen de mitos y leyendas en la Mixteca poblana y oaxaqueña, in, December 22, 2013 – On-line resource:

[2] Marco M. Vigato, Tamoanchan, in Search of the Lost Cradle of Mesoamerican Civilizations, in Ancient Origins, February 9, 2019 – On-line resource:

Also on this blog: The Location of the Mesoamerican ‘Hall of Records’ at Chalcatzingo: - Note the striking similarity between the profile of the rock of Chalcatzingo and the Peña of Huehuepiaxtla, as if to suggest that these may have in fact been sister sites belonging to the same culture

venerdì 5 aprile 2019

Ancient high-technology in the National Museum of Anthropology, Mexico City

The National Museum of Anthropology in downtown Mexico City [Photo by Author]

The National Museum of Anthropology in Mexico City hosts one of the largest collections of archaeological artefacts and pre-Columbian masterpieces in the world. Among those, are a number of pieces, some extremely famous, others entirely neglected by tourists, that exhibit a level of technical sophistication far beyond the capabilities of the ancient peoples who supposedly realized them.

1. The Aztec Calendar stone
The Aztec Calendar stone - This 24-ton monolith was discovered in 1790 in what is today the great Cathedral Square of Mexico City, near the Aztec Templo Mayor [Photo by Author]
This enormous monolith, weighting an estimated 24 tons, was discovered under the ruins of the Templo Mayor, the greatest temple of the Aztec capital city of Tenochtitlan. The enormous stone must have been dragged by thousands of peoples from quarries located at a distance of over 22 kilometers. It contains three rings or calendar wheels surrounding a central disk containing a depiction of the present Sun and of the four previous Eras or Suns, which ended in cataclysms. The first ring contains 20 glyphs corresponding to the days of the 18 months’ Aztec calendar. A second ring is similarly divided into squares, each containing 5 points, while the outermost ring contains the depiction of entwined fire serpents and more calendrical symbols. With its complicated symbolism and concentric rings or gears, the Aztec Calendar stone appears eerily similar to the petrified version of a mechanical device. 
Another bas-relief displaying a circular object (probably a shield) resembling the calendar stone. Was this curious design based on an ancient mechanical device? [Photo by Author]
2. The monolith of Coatlinchán
The giant monolith of Coatlinchan, as it stands on a fountain outside of Mexico City's National Museum of Anthropology [Photo by Author]
The monolith of Coatlinchán is a colossal ancient statue that for centuries lay abandoned in an andesite quarry near the ancient city of Texcoco, before it was finally moved to Mexico City in 1964. The same andesite quarry is also believed to have provided much of the construction materials for the stone sculptures and megalithic architecture of Teotihuacan, some 25 miles to the North-East of Mexico City. It is believed that the monolith of Coatlinchán is a representation of the Rain-god Tlaloc. It is nearly 7 meters high and weighs an estimated 152 tons, making it the largest ancient statue and one of the largest carved monoliths in all the American continent. The monolith now decorates a fountain in front of the National Museum of Anthropology in downtown Mexico City.

3. Colossal Aztec sculptures
An enormous serpent head carved out of a single block of andesite - It is believed to be a depiction of the 'Fire Serpent' and would have once adorned the sacred precinct of the Templo Mayor. [Photo by Author]
The Aztec room of the National Museum of Anthropology contains a number of colossal Aztec sculptures that once adorned the area of the Templo Mayor. Some of the most impressive ones include a giant crouching jaguar, depictions of the fire serpent or Tochancalqui, and some enormous serpent heads. The Coatlique statue is a particularly striking piece of sculpture depicting the ancient Aztec goddess of snakes, wearing a gown of entwined serpents and a necklace of severed human heads and hearts. From her decapitated head, two great serpents spring out. These statues, each weighting many tons, were carved from the hardest basalt and andesite stone by a people that had allegedly no knowledge of metal tools, and may be ranked among the finest and most striking pieces of sculpture anywhere on earth.
The Coatlique statue, also carved from a single block of andesite measuring 2.7 meters (8.9 ft) tall. It was considered so terrifying that soon after its discovery in 1790 it was quickly reburied on fear that it would encourage the return of bloody rituals and necromantic practices. [Photo by Author]
4. Teotihuacan’s ‘Goddess of Water’
This statue of the 'Water Goddess' or 'Great Goddess' of Teotihuacan was found near the base of the Pyramid of the Moon. It was probably part of a pair that decorated a large, monumental temple on top. [Photo by Author]
This enormous statue popularly known as the ‘Goddess of Water’ was found at Teotihuacan, near the base of the Pyramid of the Moon. The huge andesite statue is over 3.2 meters (10 ft) tall and weighs an estimated 15 tons. It is stylistically similar to the great monolith of Coatlinchán and may have originally formed part of a pair of statues decorating a temple on top of the Pyramid of the Moon.
This group of sculptures, which once decorated the Pyramid of the Sun in Teotihuacan, is a fine example of the great mastery achieved by the builders of Teotihuacan in working with hard stones like andesite. [Photo by Author]
5. Colossal Olmec stone heads
A colossal stone head in the Olmec room of Mexico City's National Museum of Anthropology. Notice the negroid features and what appear to be en elaborate helmet covering the head. [Photo by Author]
Over 20 colossal Olmec stone heads are known, most of which from the Mexican states of Veracruz and Tabasco. The two examples that are found in Mexico City’s National Museum of Anthropology come from the ancient Olmec capital of San Lorenzo, Veracruz. Other than for their enormous size (each weighs between 8 and 12 tons), these sculptures are remarkable for their ornate headdresses and negroid features, with slanting, deep-set eyes and high cheek bones, suggesting they may depict individuals of a race different from that of the present inhabitants.
More examples of Olmec sculpture - This life-sized statue of a wrestler is notable for the presence of a beard and the highly naturalistic pose. [Photo by Author]
Monolith n.20 from La Venta, dated to 1,200-800 B.C., contains one of the earliest depictions of the Feathered Serpent and the Myth of Quetzalcoatl. [Photo by Author]
6. Drilled alabaster vases
An exceptionally drilled alabaster vase. Found in the ancient Toltec capital of Tula, Hidalgo, this unfinished vase shows clear evidence of the use of a tubular drill for carving its interior and hollowing out material. [Photo by Author]
Another view of the same vase - Note the perfect elliptical shape and the evidence of drilling in the interior. It is inconceivable that such an object could have been manufactured without the use of the lathe and of sophisticated metal tools and abrasives. [Photo by Author]
A unique example of a drilled alabaster stone vase can be found in the Tula room. Discovered in Tula, Hidalgo, this unfinished vessel was carved with the aid of a tubular drill that left peculiar drill marks on the inside. There is no explanation as to how this was achieved by a people that supposedly ignored the use of metals but the material used (a very fine kind of alabaster) and the general workmanship are reminiscent of the finest early Dynastic Egyptian stone vessels.
Another example of a drilled alabaster vessel from the Olmec culture, with a lizard sculptured on the outside. [Photo by Author]
Another drilled alabaster vessel from the Maya region. Its decoration is strangely reminiscent of the early Chinese bronzes of the Xia and Shang Dynasty. [Photo by Author] 
7. The ‘Monkey Vase’ of Texcoco
The famous 'Monkey Vase' from Texcoco, a masterpiece of ancient obsidian stonework and one of the most valuable artifacts in Mexico City's National Museum of Anthropology. [Photo by Author] 
This small obsidian jar is perhaps one of the most exquisite objects in Mexico City’s National Museum of Anthropology. Made of a single piece of obsidian, it depicts a monkey holding its tail above its head as a kind of handle. It is not known by what means the hard obsidian (a type of black volcanic glass) was finished to achieve a perfect mirror polish without breaking it, nor how it was so precisely carved on the inside with walls just a few millimeters thick. The vessel was discovered in 1880 inside a tomb near the ancient city of Texcoco, but nearly nothing else is known of its provenance. 
Another view of the same vessel, from the front. The quality of the polish and finesse of the carvings is astonishing. [Photo by Author]
Another view of the same 'Monkey Vase' of Texcoco. The perfect geometry of the vase and the quality of its mirror-like polish can be appreciated from every side. [Photo by Author]
8. Incredible obsidian and rock-crystal objects
A set of remarkable obsidian ear spools, believed to be of Azted manufacture. The thickness of the walls is less than 1 mm, making each disc look almost transparent. [Photo by Author]
Similar to the Monkey Vase of Texcoco, but on a smaller scale, these ear spools and pendants are also made of obsidian. They are carved to a perfect mirror-like polish, with walls so thin as to be almost transparent. Other examples are known from rock crystal and other extremely hard stones. It is a mystery how this level of workmanship was achieved without the aid of sophisticated metal tools by a people who allegedly ignored even the use of the lathe. 

9. Polished basalt statues
A polished basalt snake, also believed to be of Aztec manufacture. The stone has been polished to a perfect mirror-like finish. [Photo by Author]
The same level of mirror-like finish that is found on the smallest obsidian and jade objects can also be found on some larger basalt statues, like a number of magnificent coiled serpents. These works of art are not only striking for their extremely accurate workmanship, but also for their precise geometry that is almost suggestive of the use of machines or other unknown mechanical methods for cutting and shaping the stone.
A detail of another coiled snake sculpture, from below. Note the perfect geometry of the scales and the spiral-form of the sculpture, which makes it rank among the finest artworks of all times. [Photo by Author]
10. The Codex Boturini
An illustration from the Codex Boturini, depicting the Aztec's migration from Aztlan to the mythical mountain of Coatepetl. [Photo by Author]
The mystery of the Codex Boturini lies not in how it was made, but rather in its contents. One of only a handful surviving Aztec codices, it contains a detailed account of the Aztec migration from a mythical place called Aztlan, depicted as a large island surrounded by water. From Aztlan, the Aztecs allegedly came to Mesoamerica, passing through a number of mythical and real historical places. The Codex Boturini has often been claimed to preserve the memory of the Aztec’s ancestral migration from Atlantis. The very name of Aztlan may be translated as the ‘place of whiteness’ or the ‘white island’. The equally legendary Chicomoztoc, the ‘Place of the Seven Caves’, from where the ancestors of the Aztecs emerged to repopulate the earth appears instead as a subsequent step in the Aztecs' migration after their departure from Aztlan.