﻿XU. 2 



SMITHSONIAN EXPLORATIONS, I924 



deep into the ridge, the base of the Lyell was uncovered (fig. i), 

 as well as the oolitic limestones and shales of the Bosworth forma- 

 tion' that are so finely exposed in Mt. Bosworth on the Conti- 

 nental Divide above Kicking Horse Pass near Wapta Lake. The 

 most northern cirque was named Cotton Grass from the presence of 

 large areas of the beautiful cotton grass tufted seed heads (figs. 

 5, 6). The southern cirque (fig. 7) almost cuts through Tilted 

 Mountain and bears its name. Mountain sheep have a trail up the 



Fig. 9. — Rocky Mountains Park warden cabin, on Panther River, opposite 

 the mouth of Snow Creek. (C. D. Walcott, 1924.) 



cirque and over into Douglas Lake Canyon valley and onto the north- 

 ern ice and snow fields of Bonnet Peak. In figure 7 the Lyell lime- 

 stones, with the more readily eroded Bosworth beds below, were 

 pushed eastward and the latter are tilted up against the horizontally- 

 bedded massive Devonian limestones, forming the broadly and 

 smoothly rounded mountain at the head of the cirque. We followed 

 the brook running out of the little glacial lake in the bottom of the 

 cirque in its course westward over the ledges of Lyell limestones to 

 the falls, where it slides and falls into the canyon valley of upper 

 Baker Creek (fig. 8) but everywhere the same hard, thick -bedded, 



^ Smithsonian Misc. Coll., Vol. 53, No. 5, 1908, p. 205. 



