Fig. 193. 



1 



Fig. 194. 



Fig. 193 — Panta Mountain and its glacier system. The talus-covered mass in the 

 center (B) is a terminal moraine topped by the dirt-stained glacier that descends 

 from the crest. The separate glaciers were formerly united to form a huge ice tongue 

 that truncated the lateral spurs and flattened the valley floor. One of its former 

 stages is shown by the terminal moraine in the middle distance, breached by a stream, 

 and impounding a lake not visible from this point of view. 



Fig. 194 — Recessed southern slopes of volcanoes whose northern slopes are prac- 

 tically without glacial modifications. Summit of the lava plateau, Maritime Cordillera, 

 "western Peru, between Antabamba and Cotahuasi. 



