the Moon and the Sun. The Teotihuacan metropolis has a planified urbanization with main axis, and a huge palace surrounded by 15 monumental pyramids. It was said by the Aztecs to have been surmounted by a huge stone figure related to the moon. This figure was uncovered (weighing 22 metric tons and was somehow lifted to the top of the pyramid) and it represents the Great Goddess as a water deity. Beginning in 1998, archaeologists excavated beneath the Pyramid of the Moon. Tunnels dug into the structure have revealed that the pyramid underwent at least six renovations; each new addition was larger and covered the previous structure. As the archaeologists burrowed through the layers of the pyramid, they discovered artifacts that provide the beginning of a timeline to the history of Teotihuacan. In 1999, a team led by Saburo Sugiyama, associate professor at Aichi Prefectural University in Japan and adjunct faculty at Arizona State University, and Ruben Cabrera of Mexico's National Institute of Anthropology and History, found a tomb apparently made to dedicate the fifth phase of construction. It contains four human skeletons, animal bones, jewelry, obsidian blades, and a wide variety of other offerings. Archeologists estimated that the burial occurred between 100 and 200 AD. Another tomb dedicated to The Great Goddess was discovered in 1998. It is dated to the fourth stage of construction. It contained a single human male sacrificial victim as well as a wolf, jaguar, puma, serpent, bird skeletons, and more than 400 other relics which include large greenstone and obsidian figurines, ceremonial knives, and spear points. Architecture Basic structure The pyramid is shaped like many of the other pyramids of Mesoamerica. The outer layer of the pyramid, which is currently visible features a talud-tablero shape. It has 7 layers of buildings built on top of each other. It is 43 meters tall. Its base is 147 meters in the West to East direction by about 130 meters in the North to South direction. Given the name and contents of the pyramid, it is hypothesized that there the symbolism of the moon may have been associated with water, the rainy season, femininity, fertility, and even earth. Placement Among Mesoamerican cultures it is common to use the urban planning of their city to echo their cosmological and mythological beliefs regarding the order of the universe. The positioning of this pyramid plays into the narrative of Teotihuacan.