I cannot refrain from once more laying stress on the skill to which the walls of Cliff Palace in general bear witness, and the stability and strength which has been supplied to them by the careful dressing of the blocks and the chinking of the interstices with small chips of stone. A point remarked by Jackson in his description of the ruins of Southwestern Colorado, is that the finger marks of the mason may still be traced in the mortar, and that those marks are so small as to suggest that the work of building was performed by women. This conclusion seems too hasty, for within the range of my observations the size of the finger marks varies not a little. Like Sprucetree House and other large ruins the Cliff Palace contains at the back of the cave extensive open spaces where tame turkeys were probably kept. In this part of the village three small rooms, isolated from the rest of the building, occupy a position close to the cliff; two of them (103, 104), built of large flat slabs of stones, lie close together, the third (105), of unhewn sandstone (fig. 38), is situated farther north. These rooms may serve as examples of the most primitive form of architecture among the cliff people. In the Cliff Palace, the rooms lie on different levels, the ground occupied by them being very rough. In several places terraces have been constructed in order to procure a level foundation, and here as in their other architectural labours, the cliff-dwellers have displayed considerable skill.