 It is the most monumental structure and best preserved within a site of nearly 400 hectares (a metric unit of square measures, equal to 100 ares, 2.471 acres or 10,000 square meters).There are remains of terraces, sunken courts, pyramids and platforms (the largest and most visible preserved, measuring forty by thirty feet).The building can be dated between the Epi and early Postclassic Periods (900 - 1200 CE).