The archaeological site boundaries of Los Guachimontones consist of two ceremonial areas, numerous house mounds, and terraced hillsides covering an area of approximately 19 hectares. However, remains of the site extend beyond the protected boundaries. The two ceremonial areas are Los Guachimontones, located on the hill slopes, and Loma Alta, located to the northeast on the hill top. Los Guachimontones consists of nine guachimontones, two ballcourts, a major and minor plaza, and numerous house mounds. Loma Alta consists of 5 guachimontones, one ball court, and one major plaza.