SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 53, PL. 26 



Fig. 1. NORTH RIDGE OF CASTLE MOUNTAIN 



Showing the Eldon formation in the cliffs above the lake and the Bosworth formation 

 in the snow-covered points above the cliff line. 



Fig. 2. PROFILE OF SOUTHEAST FRONT OF CASTLE MOUNTAIN, OPPOSITE ELDON 



The upper cliff is formed of the siliceous limestone of the Eldon formation; the ter- 

 race with snow on it the Stephen formation, and the lower cliff and slope the Cathedral 

 formation. These formations arc finely e.xposfr! on Mount Bosworth, but not so as to get 

 good photographs of them. 



