The chacmool is a distinctive form of Mesoamerican sculpture representing a reclining figure with its head facing 90 degrees from the front, leaning on its elbows and supporting a bowl or a disk upon its chest. There is great variation among individual chacmools, with some possessing heads that are right-facing and others left-facing, and some with the heads facing upwards; some examples have movable heads. The figure may be lying on its back or on its side and the abdomen can be sunken below the level of the chest and knees or at the same level. Some chacmools were raised upon rectangular bases. Some of the figures are richly attired whilst others are almost naked.