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SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 68 



to have been inhabited rooms but may at times have served for 

 sheher/ 



Ruin B 



Ruin B (pis. 7, 8, &) is a better preserved example of the tower type 

 and is on a ridge considerably lower than that on which ruin A 

 stands extending at right angles. It occupies a narrow space from the 

 rim of Hill Canyon on one side to a rim of a tributary canyon, block- 

 ing the passageway along the surface of the ridge to its point. This 

 structure (fig. 12) would appear to be structurally not unlike ruin A, 

 but with the wall smaller. There is a raised bench on the south side, 



Fig. 12. — Ground plan of ruin B. 



the tower itself being a semi-circular chamber annexed to the north 

 side, which extends from one canyon rim to another. The breadth 

 of this semi-circular room is lo feet. The longest dimension is 

 31 feet and the average height of its wall is 4 feet. The top of the 

 wall, throughout, is unevenly broken down, the part adjoining the 

 bench being the best preserved. The structure suggests a fort, for 

 it would not be possible to pass between this obstructing ruin without 

 entering it through a circular doorway, the walls of which still stand 

 on the east side. There is no passage between the wall and the 

 mesa edge. 



^We have in Hill Canyon ruins a good illustration of an all but universal 

 custom, among prehistoric people, of dual types of rooms, one ceremonial, the 

 other domiciliary, each constructed on different architectural lines. 



