Structure 31 is a pyramid on the eastern side of the site core. Its eastern portion has been badly damaged by looters. The structure supported two rooms. The main room has the remains of a stone bench and an entrance that opens onto the main stairway that climbs the west side of the structure from Plaza C. The building had several construction phases, all dating to the Late Classic. Excavators found an increase in fragments of Copán-style polychrome ceramics in the final construction phase. An altar and a stela were associated with the temple, the stela was not inscribed with any hieroglyphic text.