It is believed to have functioned as the house of an important person. This is emphasized by the portico with an entrance supported by two columns and a spacious interior room, at the center of which is a small altar or shrine. In the northern part, there is another room that was added later. Its name is associated with the fact that this building was integrated with a chultun (a Maya term referring to an underground cavity designed for water storage), located near its southwest corner.
