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SMI T 1 1 S( ) X I A X 1 X ST I T UTJO X 



Fig. 69. — Signal Butte from main escarpment to the south. 

 Photograph by C. L. Dow. 



Fig. 70. — Excavating main north to 1 south trench. 

 Photograph by W. R. Wedel. 





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Fig. 71. — Original test trench completed, showing three occupation levels 

 and whitish water-borne material under lowest level. Photograph by W. R. 

 Wedel. 



