[52] The writer was not able to determine the exact site of the traditional Tokónabi, but believes one is justified in considering the ruins visited to be prehistoric houses of the Snake (Flute), Horn, and other Hopi clans whose descendants now live in Walpi. [53] While circular subterranean kivas are found in some of the ruins, none of these have the six pilasters so common higher up on the San Juan, nor have these rooms ventilators like those of Spruce-tree House. Some of the ruins have rectangular kivas, above ground, entered from one side. [54] The best example of walls of this kind is found in an undescribed cliff-ruin in the canyon southwest of Cliff Palace. [55] It is generally the custom to speak of the rectangular subterranean rooms of Walpi as kivas, while the square or rectangular rooms above ground, in which equally secret rites are performed, are not so designated. Both types are ceremonial rooms, but for those not subterranean the term _kihu_ (clan ceremonial room), instead of kiva, is appropriate. RECOMMENDATIONS The writer has the honor to recommend that one of the largest two cliff-dwellings in the Navaho National Monument, either Betatakin or Kitsiel, be excavated, repaired, and preserved as a “type ruin” to illustrate the prehistoric culture of the aborigines of this section of Arizona; also that this work be supplemented by excavation and repair of Inscription House, an ancient cliff-dwelling in West canyon. He also recommends that one or more of the ruins in West canyon be added to the Navaho National Monument and be permanently protected by the Government.