geology exposed at dublin gulch

america ancient archaeological archeology arid bed california canyon clay cliff cliffs color colorful colors desert detail dry dublin eroded erosion expose exposed exposure flash flood floor foot formation formations geologic geological geology gulch historic historical history inside landscape layer layers monolith natural nature primitive red river rock rocks sand scene scenery scenic sediment sedimentary serene serenity shoshone southwest stream tranquil tranquility usa valley view walk walls wash west western