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cliff. It is about 80 feet above sea level, and sonic 400 feet 

 below the crest of the cliff's that rise directly above it. An ex- 

 tensive talus deposit slopes from the mouth of the cave down to 

 the rocky platform already described. This deposit is composed 

 of larg-e sharp-edged blocks of basalt that have drojjped from the 

 cliff, minj^led with fine detritus (Fig. 2). The mouth of the 

 cave, shown in the figure, is about 50 feet long by 12 feet high. 

 The cave is lenticular in profile, the basalt ceiling sloping grad- 

 ually to the floor. The structure of the lava sheets that roof the 



