When the cliff dwellers started building in the cave they were confronted with the problem of an uneven floor. The floor of the cave slanted from the back to the front and was covered with huge, angular boulders that had fallen from the cave roof. This problem the cliff dweller solved by erecting terraces and filling in the irregular places. The open spaces between the boulders were excellent for kivas, as there was not a great deal of excavation necessary. After the kiva walls were built the extra space was filled in with trash and dirt. When the flat kiva roof was added a level court resulted. Around this court the homes were constructed, often on the rough surfaces of the big boulders. Because of the uneven floor and the terracing that was necessary, six distinct terrace levels resulted. KIVAS Twenty-two kivas are located in the cave and another, lying about 50 feet from the western end, and thought to have been used by men living in the cave, brings the total to 23. Twenty of these conform to the plan of the typical Mesa Verde kiva, but three seem to be of a different type. These three, instead of being round, are square with rounded corners. The banquette is missing as well as the pilasters or roof supports. STORAGE ROOMS Because of the fact that the inhabitants of Cliff Palace were forced to store enough corn each fall to last until the next harvest a great many storage rooms were constructed. Any small nook or cranny that was too small for a home was utilized for that purpose. Far back in the cave a number were constructed of large, thin sandstone slabs. These slabs were placed on end to form small rectangular rooms. When the door slabs were in place and all of the crevices were well chinked with mud the grain was safe from the rodents. High up under the roof of the cave, at the back, was a long narrow shelf that was also utilized for storage space. A wall was built along the front of the ledge to the cave roof, and the space back of the wall was divided into 14 small storage rooms. A ladder on the roof of one of the houses below gave access to the ledge. PAINTINGS In the third floor room of the four-story tower is the finest painting yet found in the Mesa Verde. The entire inner surface of the four walls was covered with bright red designs on a white background. The designs are similar to those found on cliff-dweller pottery. The white color was obtained by mixing finely ground gypsum with water to form a smooth paste; the red was obtained by treating hematite, or red ochre, in the same manner. THE ROUND TOWER