Archaeologists believe that what is known today as Cañada de la Virgen was most active from 600-900 B.C., long before the Mexica (also known as Aztecs) conquered the Otomí peoples who occupied the present-day states of Puebla, Guanajuato, and Hidalgo, in the 14th century. A unique site situated on a symmetrical axis, it is oriented toward the sunrise in front, unusual when compared to similar sites in the area, and the moonrise in back. It was built by the sun’s daily path through the sky, and its temples are aligned with the heavenly bodies.