UNIV. CALIF. PUBL. BULL. DEPT. GEOL. SCI. [ VAUGHAN | VOL. 13, PL. 17 



-Summit ridge from San Gorgonio Mountain to San Bernardino Mountain 

 as seen from Gold Mountain. Part of Bear Valley in the foreground. 



Egtfttl 



B. — Basalt-capped hills east of The Pipes. 



