SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 75, NO. 5, PL. 66 



CATHEDRAL 



Profile of cliffs at north end of ridge above the southeast side of Ross 

 Lake, British Columbia. The end of the ridge is capped with the cliff-forming 

 limestones of the Middle Cambrian Cathedral formation. The position of 

 the Ross Lake shale member of the Ptarmigan formation with the Albert ell a 

 fauna is at A. The Mount Whyte formation is superjacent to the St. Piran 

 formation, which forms the base of the section. 



Localiiy. — i mile (i.6 km.) south-southeast of Stephen Station on the 

 Continental Divide at Kicking Horse Pass, Alberta. 



