Set that is formed around the top of the hill on the east side of the hill Tetzcotzinco, where there are representations in relief of the god Tlaloc. In addition, during the excavations, elements related to this deity were detected. On the slope of the Metecatl or Tepetan hill, the system of canals, tubs on platforms (some of them with rooms) and the aqueduct, which is 180 m long and has a height of 7 m in the center, can be observed. It was built to maintain the water level between the Metecatl and Tetzcotzinco hills.