Robert Betka — Nature as Art

Sandstone Cliff, Pictured Rocks National Lakeshore, Michigan

Sandstone Cliff, Pictured Rocks National Lakeshore, Michigan

Sandstone Cliff, Pictured Rocks National Lakeshore, Michigan

Sand Ripples, Homer Spit, Alaska

Sand Ripples, Homer Spit, Alaska

Low Tide, Bartlett Cove, Alaska

Low Tide, Bartlett Cove, Alaska

Low Tide, Bartlett Cove, Alaska

Low Tide, Bartlett Cove, Alaska

Low Tide, Bartlett Cove, Alaska

Red pine

Lichen on beech

River birch

Agate

Agate

Petoskey Stone

Cedar driftwood, Rialto Beach, Olympic National Park, Washington

Cedar driftwood, Rialto Beach, Olympic National Park, Washington

Driftwood, Rialto Beach, Olympic National Park, Washington

Driftwood, Rialto Beach, Olympic National Park, Washington

Driftwood, Rialto Beach, Olympic National Park, Washington

Limestone, Glacier Bay National Park, Alaska