 It is not known if the roofs of great kivas were constructed level with the exterior walls or raised above them, but it is believed that the space between the floor and the roof in Chetro Ketl's great kiva was probably not much more than what would be required for average standing height, approximately .Thirty-nine crypts, measuring approximately in height, wide, and deep, have been uncovered in the great kiva.They are spaced approximately apart and located around the inner circumference of the outer wall.