The site served as the head of one of the most important lordships. It was occupied from 2013 B.C. until the Spanish Conquest. Shirley Gorennstein defined three phases based on her analysis of the area's architecture and pottery: Phase Huichi,, and Phase Xaqua Toyna.
Design
The core of the site is a walled fortress, which is located at the confluence of two deepravines ; one of them is the Xamilpa or Lazamilpan river, givingthe spot strategic importance: this river is a tributary of Atoyac River. The area consists of a wall surrounding the exposedarchaeological structures of squares and ceremonial mounds, which suggests it was once a military fortress.