The site of Bonampak spreads over 2.4 sq km, but all the main ruins stand around the rectangular Gran Plaza. Never a major city, Bonampak spent most of the Classic period in Yaxchilán’s sphere of influence. The most impressive surviving monuments were built under Chan Muwan II, a nephew of the Yaxchilán’s Itzamnaaj B’alam II, who acceded to Bonampak’s throne in AD 776. The 6m-high Stele 1 in the Gran Plaza depicts Chan Muwan holding a ceremonial staff at the height of his reign. He also features in Stele 2 and Stele 3 on the Acrópolis, which rises from the south end of the plaza.