Detail of Tláloc's left huarache or cacle, "the eagle is an allegory of the city that drinks water from the Lerma System".
"The fountain is the anthropomorphic representation of Tláloc, the Lord of the waters. His head responds to a certain particular entity, his version as a synthesis of a twin serpent. This is due to the shape of his glasses and jaws as a product of an interweaving of two snakes" (“El agua, origen de la vida en la Tierra. Diego Rivera y el Sistema Lerma”, 2012, pp. 75 and 77).