Natural Bridge in Yoho National Park70Natural Bridge in Yoho National ParkAll Souls Prospect, an overlook above Lake O'Hara63All Souls Prospect, an overlook above Lake O'HaraGlaciers are disappearing in BC and US77Glaciers are disappearing in BC and USRogers Pass Summit, Glacier National Park, BC70Rogers Pass Summit, Glacier National Park, BCWheeler Peak and Jeff Davis Peak70Wheeler Peak and Jeff Davis PeakBristlecone Pine at Twilight in Great Basin Nat. Park60Bristlecone Pine at Twilight in Great Basin Nat. ParkLexington Arch of Great Basin National Park60Lexington Arch of Great Basin National ParkThe Grand Prismatic Spring, Yellow Stone32The Grand Prismatic Spring, Yellow StoneYellowstone Volcano Caldera rising50Yellowstone Volcano Caldera risingDevil's Tower National Monument60Devil's Tower National MonumentSea Stacks along the Pembrokeshire Coast63Sea Stacks along the Pembrokeshire CoastGreen Bridge of Wales at Dusk - Twilight60Green Bridge of Wales at Dusk - TwilightPembrokeshire Coast National Park, Wales63Pembrokeshire Coast National Park, WalesSilver Lake, Chilliwack Range, North Cascades National Park, WA60Silver Lake, Chilliwack Range, North Cascades National Park, WAA rare snowstorm blanketed Saguaro East 200763A rare snowstorm blanketed Saguaro East 2007Summer monsoon as seen from Saguaro East70Summer monsoon as seen from Saguaro EastAlong the Balanced Rock Trail70Along the Balanced Rock TrailPinnacles in a Rhyolite canyon from Massai Point63Pinnacles in a Rhyolite canyon from Massai PointApache Stronghold - Chiricahua Mountains54Apache Stronghold - Chiricahua MountainsEcho Canyon Trail - The Grotto60Echo Canyon Trail - The Grotto