46 



SMITHSONIAN INSTITUTION 



Fig. 35. — An undercut key near the Boca del Infierno cave. .\ colony of 

 fritjate liirds wa.s nesting on the small kev at the ri,s;ht. 



Fig. 36. — San Gabriel Island, near the Boca del Infierno cave. This island 

 contains a large cave in which we found extensive Indian shell heaps. 



