iron oxide cross bedded sandstone cliffs overlook crescent dune below

aeolian american ancient apache archaeology arizona austere barren bedded bedrock blue brush canyon chelly cliff cloudless colorful contrasts corners county crescent cross deep delineate desert discoloration dune dunes dwellings economy epitome erosion four geology hatched indian iron landscape lithified local monument nation national native navajo nps ochre oxidation oxide park patina patterns peoples perch process pueblo red rocks root rust sand sandstone scrub scrubby service sharply slopes steep tourism umber unyielding vibrant visit weathering wedging west western