GLACIERS 289 



deep cracks called crevasses. These make travel along glaciers 

 sometimes very dangerous. The travelers are usually tied 

 together with ropes, so that if one of the party slips into a 

 crevasse, the others will be able to hold him up and pull 

 him out. 



A glacier, like a river, is found to flow fastest near the 

 middle and on top, and slowest at the bottom and on the 



CREVASSES IN A GLACIER 

 Danger points in travel over glaciers. 



sides. The rate of motion in the Alpine glaciers varies 

 generally somewhere between 50 feet and one third of a 

 mile in a year, being greatest in the summer and least in 

 the winter. 



Alpine glaciers are found not only, as the name would 

 indicate, in the Alps, but also in Norway, in the Himalayas, 



