ii8 THE ADVENTURES OF A NATURE GUIDE 



At one point the main slide had dislodged a 

 nuniber of boulders. The small boulders started 

 a miniature slide that after slipping a short distance 

 came to a standstill. One boulder must have 

 weighed fifty tons. This enormous fellow had 

 gone bounding down a slope with long leaps, strik- 

 ing a snowdrift and a rock pile which lay at the 

 top of a steep, glaciated incline. Down this incline 

 plunged slide number two, gathering all the snow 

 and stones along the way. 



As the slide came into the bottom of the canon 

 it hit a small ice-bound lake that lay in a rocky 

 basin, smashing the ice and sweeping out most of 

 the water. The farther canon wall was deluged 

 with water which promptly froze in a rough ice 

 sheet. The slide, however, continued on its way. 



Just beyond the lake it rammed the canon wall 

 at an angle. Apparently it was thrown off to the 

 right and turned upside down. Ice cakes and 

 stones were scattered and piled in the bottom of 

 the canon. Torn and splashed places in the snow 

 far up on the canon walls showed where flying 

 stones had struck. The slide rushed on down the 

 gorge and after a run of nearly a mile its terrific 

 momentum caused it to jump completely out of the 

 gorge on the outside of a curve at a point where 

 the wall was low. This ended its career. A high 

 and long-enduring dust column ascended from the 

 place where it landed. 



Gravity is the pull that moves snow as well as 



