joshua trees (yucca brevifolia) and monzogranite rock formations on the barker dam trail

america american landscape scenic west barker dam trail boulders cactus california desert deserts ecosystems geological formation geology hiking holiday joshua tree national park monzogranite formations natural nature north outdoors outside rock tourism travel usa vacation western yucca brevifolia destination scenery trees america american landscape scenic west trail boulders cactus california desert deserts destination ecosystems formation geology hiking holiday tree park formations natural nature outdoors outside scenery tourism travel usa vacation