xo. 



SMITHSONIAN EXPLORATIONS, I918 



71 



Sand Canyon, one of the northern triljutaries of the ]\IcEhno, 

 contains several prehistoric buildings which have not hitherto been 

 described, but offer possibilities for future research. Among- these 

 are well-made clitt-houses, one of the best preserved of which is 

 shown in figure 83. There is another house ( fig. 84 ) in a ceremonial 

 cave, consisting" of a single circular kiva of the ]\Iesa \'erde t}pe 



J'Ki. 79. — D-shaped tower. McLian llasin, I'tah. Photo- 

 grapli liy J. Walter Fewkes. 



surrounfled by rectangular rooms, (jccupying ihe whole tloor of the 

 cavern. This building is a uni(|ue ex.'imjde ol a purblo of iIk- single 

 unit tvpe situated in a ca\e. A remarkable feature is the existence 

 of walls of a more modern kiva built inside those of an oldei- chamber, 

 resembling in this resi)ect one of the kivas of Si>ruc-e Tree I louse. 

 on the .Mesa \ erde .Valional I'ark. Another nnii--n.d ruin in Sand 



