The largest mound was built in three stages, with a set of steps leading to the top, where a structure was built over the entire flat top. The mound was covered with a clay cap, probably to enhance its appearance. Corn was stored in pits inside the structure. Scholars have several theories about why the corn was kept there, and the overall purpose of the structure. It may have been the storage facility for the entire village, or storage for food just for the top village officials; it may have been used for ceremonies and rituals; or it could have been a house for the village officials. This topmost structure was rebuilt each time a larger stage of the mound was built on top of the old.