are well-known; by their respective locations within the site, as for the constructive systems used to build them. Regional quarry white and pink stone was used, jointed with mud and there are remains of stuccoed surfaces, hardened with fire. Nevertheless, perhaps the most remarkable feature of the place is its physical and strategic location in front of Cuitzeo Lake. The site construction, or what can be seen today, is located within a land plot of about 187 by 100 meters (614 by 238 ft.), it depicts a complex center. Whether its purpose was as a political, religious or administrative is actually not known, the official version remains full of speculative assumptions. The site is oriented on an east–west axis, with the main structure on the north-eastern corner, other structures cover the entire southern side and remains of other basements are along the northern side. Main Structure The main structure, called as such for the sake of discussion, occupies the site north-west corner and it actually has four components, the sunken patio, small temple or altar to the north, a concentric circular basement and a Temple, east of the patio. Sunken Patio The sunken patio (or plaza) is an irregularly shaped trapezoid, measures some 20 meters wide (65 ft.) on the south side, about 24 meters wide on the north side and it is about 30 meters (98 ft.) long. It is surrounded by a double wall, which might have been a perimeter walkway. It has access stairs at the center of both, the south and north sides. Although it is not known what its purpose actually was, its size and depth, resembles a pool. It could have been a ceremonial pool. Small Temple The sunken patio, on its northern side, has a stairway leading to a structure with several level platforms and remains of a structure, which possibly was an altar, related to events taking place in the complex. Concentric Circular basement It is located at the northernmost edge of the sunken patio-altar complex. It consists of two concentric stone circles, the outer circle measuring about 20 meters (65 ft.) in diameter, with no other visible structural remains. The circle is not complete, its south side, facing the altar is flat against the altar structure. Temple This temple was perhaps the most important component of the complex, it holds the highest position of the site, and its entrance faces west