Sacul is an archaeological site of the Maya civilization located in the upper drainage of the Mopan River, in the Petén department of Guatemala. The city occupied an important trade route through the Maya Mountains. The main period of occupation dates to the Late Classic Period. In the late 8th century AD through to the early 9th century, Sacul was one of the few kingdoms in the southeastern Petén region to use its own Emblem Glyph, together with Ixtutz and Ucanal. The site core includes pyramids, a ballcourt, a triadic complex and two E-Group astronomical complexes.