GLACIATION OF WRANGELL MOUNTAINS 49 



there is a belt, near the west edge, in which the surface is free from 



»<^. ; ., 



Fig. 7. — View showing surface character of the upper portion of Russell Glacier. 



debris and level enough to make travel easy. Here there are few 

 crevasses for a distance of perhaps three miles. As the lobe which 



Fig. 8. — A lake in the moraine-covered ice of Russell Glacier. 



moves into the valley of Skolai Creek is approached, the ice-surface 

 again becomes broken and irregular, with rugged, moraine-covered 



