SMITHSONIAN EXPLORATIONS, I93I 



167 





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Fig. 159. — Petroglyphs at Indian Grotto near Edgemont, Ark. The dia- 

 monds may have been a conventionalized way of representing the pattern 

 on a rattlesnake. 



'i 



Fig. iCio. — Horse and human figures. Indian Grotto petroglyphs. These are 

 the figures which have given rise to the Spanish legend. 



