The whole length of Betatakin is not far from 600 feet, following the foundations from one end to the other. There are not far from 100 rooms visible, and evidences of others covered with débris. The larger of the two rooms identified as ceremonial rooms on account of their deflectors, measures 10 by 7 feet and is about 5 feet high; the smaller is about 7 feet square. There are no vertical ventilators as in circular kivas, the smoke evidently finding egress through a small hole in the roof. The floor of one of these ceremonial rooms was cut in the solid rock. As above mentioned, there are no circular rooms or towers in Betatakin, although one room has a rounded corner. Traces of the repair of doors and windows are evident, but none of these apertures are T-shaped. One of the interesting features in Betatakin and several other ruins in this region consists in rows of eyelets cut in the rocky side of the cliff evidently for the attachment of some long object. A cluster of small rooms isolated from those above described are shown in plate 9; these give a good idea of the general type of architecture of these buildings and of the modifications or adaptations due to the sites on which they are erected and the vertical cliffs against which they are built. Three rooms set into the angle formed by two vertical cliff faces at right angles to each other illustrate how the cliff serves for rear walls and how the buildings are attached to it for support. The roofs of these rooms are entire and their rafters project beyond the upright walls. The doors and windows are, comparatively speaking, small and rectangular in form. Fragments of walls projecting out of the ground indicate the existence of many rooms covered with débris. These are especially numerous at the end of the ruin to which the trail leads, but as most of them are buried an adequate idea of their arrangement can not be gained without systematic excavation. KITSIEL (KEET SEEL) This ruin, which lies about 10 miles from Marsh pass, is a most interesting cliff-dwelling.[32] As this is the best preserved of all the ruins thus far discovered in the Navaho National Monument, it should be excavated and repaired for future visitors and students. Kitsiel is a large ruin, its length (estimated at 300 feet) being not less than that of the greatest cliff-dwelling of the Mesa Verde National Park. Like other ruins in the vicinity, it is not so picturesque as the structures of that region, lacking round towers and other features so attractive in Cliff Palace.[33] The accompanying illustration (pl. 13) presents the ground plan of this ruin, the architectural features of which are similar to those of Betatakin. [Illustration: BUREAU OF AMERICAN ETHNOLOGY BULLETIN 50 PLATE 11 BETATAKIN—CENTRAL PART]