NO. 2 



SMITHSONIAN EXPLORATIONS, I918 



95 



of the prehistoric Pueblos of the San Juan drainage and neighboring 

 sections of the southwest. Shards ornamented with black geometric 

 designs seem to predominate, luit there are also numerous fragments 

 of black-on-red and the customary plain and corrugated ware. Those 

 which are decorated exhibit no marked variations from shards of 

 similar design found upon ruins in better known localities and tend 

 to substantiate the belief that a definite cultural relationship existed 

 between the prehistoric peoples on either side of the Colorado River. 

 A small group of ruins distinctly different in t}pe from those 

 observed on the W'alhalla Plateau was noted near Two-Mile Spring, 



Fig. 107. — Sandstone slali making the walls of a small circular ruin near 

 Two-Mile Spring, House Rock Valley. 



in upper House Rock X'alley. The structures are all ciixular, or 

 nearly so, and measure from 4 to 10 feet in diameter; their standing 

 walls are of dressed sandstone slalxs. set on end and usuall\- cIdsc 

 together. Xo trace of plaster is to be found in an\- of the rooms and 

 nothing remains of the masonry which un(|ucslional)l\- surmountrd 

 the U];right stones. Where ex])ose(K llu- tloors are coxered willi 

 Ijurned earth and a>lK's :ind mixed wilh lliese are chunl<s of roofing 

 clay still Itearing im])i-essions of willows, grass, elc. All of the struc- 

 tures are circular — ikj e\iilence of ;i former rectangular dwelling 

 was noted in tlirir immediate vicinit\. rrchistoiic remains simil.ar 

 to these have ijeen observer!, .also, to the ca-^t of the C'olorado l\i\er, 

 between (irand Oulch and ( liinlee \ alley, in the San juan drainage. 

 As yet their original appearance and use seems to lia\e been incom- 

 pletely determincfl. 



