Dawn breaks at Keurboomstrand, Western Cape, South Africa. Dune trekking in White Sands National Monument, New Mexico. Late-afternoon stroll above the Colorado River, Horseshoe Bend, Page, Arizona. Vermilion cliffs from Bunting trail, Kanab, Utah. Las Vegas, Nevada, at dawn from Black mountain, Boulder City. Sunrise lights the ‘wave’ at Valley of Fire State Park, Nevada. Shades of autumn at Kenmo Lake, KwaZulu-Natal, South Africa. A view from 'The Frenchman', Nevada. Sunrise on Iron Mountain, Poway, California. Mount Ngauruhoe (‘Mount Doom’) at dawn, Tongariro, New Zealand. Dewar Peak, Queenstown, South Island, New Zealand. Second day on the Kepler Tramp, South Island, New Zealand. Advancing on Mount Rainier, Washington, in summer. A view from the peak, moments before a hail and thunderstorm strikes Pic Casamanya, Andora (altitude 9,026 feet). Climbing chain ladders at Mont-aux-Sources, South Africa. Early...