By Bob Kuo | Buckeye, Arizona, USA

By Bob Kuo | Sun Moon Lake, Nantou, Taiwan

By Bob Kuo | Root Glacier, Kennecott, Alaska

By Bob Kuo | New Mexico

By Bob Kuo | Little Finland, Nevada

By Bob Kuo | Little Finland, Nevada

By Bob Kuo | Little Finland, Nevada

By Bob Kuo | Toadstool Hoodoos, Utah

By Bob Kuo | Toadstool Hoodoos, Utah