U. S. GEOLOGICAL SURVE1 
BULLETIN NO. 352 PL. IX 
Topography from 
U. S. Reclamation Service maps 
200 o ?oo 400 600 800 iooo feet '! w 
I i i i I i L_i I . I , i , , 
Contour interval 10 ieet 
MAP AND SECTION AT SOUTH END OF PYRAMID CANYON, COLORADO RIVER. 
