Geology


	Striking unconformity in fossilzed sand dunes.
	Cavernous "honeycomb" weathering in sandstone along Oregon coast.
	Sandstone beds rent upward by upllift of Rocky Mounatins. Garden of the Gods State Park, Colorado.
	Massive rockfall in Cocconino Sandstone. Jackass Wash, near Colorado River, Arizona. Note person at lower left for scale.