rugged and colorful mountains along northshore road sr167 in lake mead national recreation area

rugged colorful mountains northshore road sr167 lake mead national recreation area 167 arizona arm blue boulder city colorado desert drive dry environment erosion feature formation formations geological geology indigenous landscape lava layers limestone mohave mountain mountainous nationa nature nevada outdoors overton panorama park peak reserve ridge river rock rocks sandstone sates semi semidesert shale sky terrain territory trails united usa valley volcanic wilderness winds