The stucco facade of Sak Xok Naah, the royal mausoleum of the Maya king Ukit Kan Leʼk Tokʼ who reigned from May 26, 770 until some time after 797 CE. Embedded within the Acropolis at Ek' Balam, in Mexico, its doorway is in the shape of a monster-like mouth, possibly depicting a jaguar