What is "xultun"

Xultún is a large Maya archaeological site which once supported a fairly large population, the site is located 40 km northeast of Tikal and 8 km south of the smaller Preclassic site of San Bartolo in northern Guatemala. The site contains a 35 m tall pyramid, two ballcourts, 24 stele (the last of which, Stele 10, dates to 889), several plazas, and five aguadas (water reservoirs). Xultún is the largest-known Classic Maya site that has yet to be archaeologically investigated. Nearby sites include Chaj K’e’k Cué, a site believed to be the residential area of the Xultún elite, containing an 8 meter tall palace, Isla Oasis, and Las Minas. These later sites contain large limestone quarries.

The site of Xultun includes a recently discovered mural with Late-Classic Maya calendar notations relating to lunar astrology.