NOS L7 SMITHSONIAN EXPLORATIONS, 1910 17 
and thus exposed to erosion the heart of the great arch that had its 
crest over the region now occupied by Mount Victoria and other 
peaks of the Bow Range. 
tandardizing the size of an old trail gang oven beside the trail. 
Photograph by Walcott, 1916. 
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A glance into this wonderland is shown by figures 9 and 10, which 
are views looking south across the Bow Valley into the heart of 
the Rockies. The illustration of Pinnacle Peak (fig. 11) tells the 
story of the tremendous power of erosive agencies, where the colossal 
