Pyramid of the Sun
The Pyramid of the Sun is the largest building in Teotihuacan and one of the largest in Mesoamerica. Found along the Avenue of the Dead, in between the Pyramid of the Moon and the Ciudadela, and in the shadow of the massive mountain Cerro Gordo, the pyramid is part of a large complex in the heart of the city.
The name Pyramid of the Sun comes from the Aztecs, who visited the city of Teotihuacan centuries after it was abandoned; the name given to the pyramid by the Teotihuacanos is unknown. It was constructed in two phases. The first construction stage, around 100 A.D., brought the pyramid to nearly the size it is today. The second round of construction resulted in its completed size of 738 feet (224.942 meters) across and 246 feet (75 meters) high, making it the third largest pyramid in the world,  but being much shorter than the Great Pyramid of Giza (146 metres). The second phase also saw the construction of an altar atop of the pyramid, which has not survived into modern times. The Adosada platform was added to the pyramid in the early third century, at around the same time that the Ciudadela and Temple of the Feathered Serpent, Teotihuacan Pyramid of the Feathered Serpent were constructed.
Over the structure the ancient Teotihuacanos finished their pyramid with lime plaster imported from surrounding areas, on which they painted brilliantly coloured murals. While the pyramid has endured for centuries, the paint and plaster have not and are no longer visible. Jaguar heads and paws, stars, and snake rattles are among the few images associated with the pyramids.
It is thought that the pyramid venerated a deity within Teotihuacan society, however, little evidence exists to support this theory. The destruction of the temple on top of the pyramid, by both deliberate and natural forces prior to the archaeological study of the site, has so far prevented identification of the pyramid with any particular deity.
Structure measurements, location and orientation
|Height||233.5 feet or 71.2 metres|
|Base perimeter||2,933 feet or 894 metres|
|Side||733.2 feet or 223.5 metres|
|1/2 side||366.6 feet or 111.7 metres|
|Angle of slope||32.494 degrees|
|Lateral surface area||637,370.76 square feet or 59,213.681 square metres (assumes perfect square base and smooth faces)|
|Volume||41,841,817 cubic feet or 1,184,828.3 cubic metres (assumes perfect square base and smooth faces)|
The orientation of the structure may hold some anthropological significance. The pyramid is oriented slightly northwest of the horizon point of the setting sun on two days a year, August 12 and April 29, which are about one divinatory calendar year apart for the Teotihuacanos. The day of August 12 is significant because it would have marked the date of the beginning of the present era and the initial day of the Maya long-count calendar. In addition, many important astrological events can be viewed from the location of the pyramid that are important in terms of both agriculture and belief systems of the ancient society.
The pyramid was built over a man-made tunnel leading to a "cave" located six metres down beneath the centre of the structure. Originally this was believed to be a naturally formed lava tube cave and interpreted as possibly the place of Chicomoztoc, the place of human origin according to Nahua legends. More recent excavations have suggested that the space is man-made and could have served as a royal tomb. Recently scientists have used muon detectors to try to find other chambers within the interior of the pyramid, but substantial looting has prevented the discovery of a function for the chambers in Teotihuacan society.
Only a few caches of artifacts have been found in and around the pyramid. Obsidian arrowheads and human figurines have been discovered inside the pyramid and similar objects have been found at the nearby Pyramid of the Moon and Pyramid of the Feathered Serpent in the Ciudadela. These objects may have represented sacrificial victims. In addition, burial sites of children have been found in excavations at the corners of the pyramid. It is believed that these burials were part of a sacrificial ritual dedicating the building of the pyramid. Just recently[when?] a man's body was found buried in the Moon Pyramid. The man was apparently buried alive with art, gold and sacrifices for the gods.
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