red ochre sandstone layers eroded in v d valleys

american and arid arizona ash badlands beaten bedrock bentonite blood box brick brush buried canyon chemical clay climate coal covered deceptive desert eek eroded erosion fluvial forest fossilization geology hills horizontal landscape layer layers minerals national native ochre off out overlook painted park path petrified place red replacement rolling rust sandstone scale scales scrub seams service shaped siltstone southwest the their tumbleweed unpopulated valleys volcanic wagons weathered weathering west