Antler
Caribou antler, Eilson Visitor Center, Denali National Park and Preserve, Alaska.
Autumn
Fall color at Shelburne Farms, Vermont.
Bears
Brown bear mother and cub, Lake Clark National Park and Preserve, Alaska.
Bison
Bison in Lamar Valley, Yellowstone National Park.
Bryce
Winter scene, Bryce Canyon, Utah.
Bolts
Hardware and vegetation at old mine site, Joshua Tree National Park, California.
Cahuita
Jungle vegetation, Cahuita National Park, Costa Rica.
Cactus
Mojave mound cactus in bloom, Joshua Tree National Park, California.
Cienega
Sunset on Cienega de Santa Clara, Colorado River delta, Mexico.
Coyote
Coyote in winter, Yellowstone National Park.
Cottonwood
Sunlight on cottonwood, Horseshoe Canyon, Canyonlands National Park, Utah.
Cubs
Brown bear cubs at play, Katmai National Park and Preservs, Alaska.
Denali
Ruth Glacier and Mt. McKinley, Denali National Park and Preserve, Alaska.
Delicate
Dory
Seaweed harvesters, Dark Harbor, New Brunswick.
Fishing
Brown bear snags spawning sockeye salmon, Katmai National Park and Preserve, Alaska.
Fir
Red fir skeleton, Watchtower Trail, Sequoia National Park, California.
Gears
Weathered machinery, Wall Street Mill, Joshua Tree National Park, Calfornia.
Fungus
Fungus, ferns and club moss, Denali State Park, Alaska.
Golden
Golden Canyon and Zabriskie Point, Death Valley National Park, California.
Geyser
Castle Geyser, Yellowstone National Park.
Hatcher
Clouds over Hatcher Pass, Talkeetna Mountains, Alaska.
Heron
Great blue heron on Big Creek, Mendocino County, California.
Jay
Steller's jay and sunflower, Mendocino, California.
Ice
Ice and stones in streambed, Natural Bridges National Monument, Utah.
Lamar
Autumn storm clouds over Lamar Valley, Yellowstone National Park.
Joshua
Storm at dawn, Indian Cove campground, Joshua Tree National Park, California.
Leaves
Backlit leaves, Armstrong Redwoods State Nautral Reserve, California.
