Chaac is the name of the Mayan god of rain, thunder and lighting. With his lighting axe, Chaac strikes the clouds, causing them to produce thunder and rain. Chaac corresponds to Tlaloc among the Aztecs. The ritual mask shows a crack that looks like a thunder as well. The face is depicted in the characteristic Mayan archetype of beauty with a big nose and elongated skull. This object shows the importance of water.