Rainbow over Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Trout Lake - Yellowstone National Park, WY (c) Jim Clark
Summer Afternoon in Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Afternoon light on the hills - Yellowstone National Park, WY (c) Jim Clark
Barronette Peak - Yellowstone National Park, WY (c) Jim Clark
Angel Terrace at Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Angel Terrace at Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Antelope Creek Drainage - Yellowstone National Park, WY (c) Jim Clark
Thunderstorm near Slough Creek - Yellowstone National Park, WY (c) Jim Clark
Aspen in late afternoon light - Gardner River near Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Aspen - Yellowstone National Park, WY (c) Jim Clark
Aspen - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Aspen - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Scene near Slough Creek - Yellowstone National Park, WY (c) Jim Clark
Scene near Slough Creek - Yellowstone National Park, WY (c) Jim Clark
Morning Fog in Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Morning Fog in Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Morning Fog in Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Summer Morning in Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Badger - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Beach Spring Geyser - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ewe - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ewe - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ewe - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Big Horn Sheep Ram - Yellowstone National Park, WY (c) Jim Clark
Black Bear Sow - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Black Bear Sow - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Black Bear Sow - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Black Bear Sow near Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
American Elk - Gibbon Meadows - Yellowstone National Park, WY (c) Jim Clark
American Elk - Gibbon Meadows - Yellowstone National Park, WY (c) Jim Clark
American Elk - Gibbon Meadows - Yellowstone National Park, WY (c) Jim Clark
American Elk - Gibbon Meadows - Yellowstone National Park, WY (c) Jim Clark
American Elk - Yellowstone National Park, WY (c) Jim Clark
Elk Skull along Rose Creek - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Elk Herd in early morning fog - Swan Lake - Yellowstone National Park, WY (c) Jim Clark
Canyon near Tower Falls - Yellowstone National Park, WY (c) Jim Clark
Canyon Walls - Grand Canyon of the Yellowstone - Yellowstone National Park, WY (c) Jim Clark
Canyon Walls - Grand Canyon of the Yellowstone - Yellowstone National Park, WY (c) Jim Clark
Canyon Walls - Grand Canyon of the Yellowstone - Yellowstone National Park, WY (c) Jim Clark
Cascades along Gibbon River - Yellowstone National Park, WY (c) Jim Clark
Gibbon Falls - Yellowstone National Park, WY (c) Jim Clark
Castle Geyser - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Castle Geyser - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Cedar Tree Trunk - Upper Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Chocolate Pots - Gibbon River - Yellowstone National Park, WY (c) Jim Clark
Chocolate Pots - Gibbon River - Yellowstone National Park, WY (c) Jim Clark
Firehole Falls - Yellowstone National Park, WY (c) Jim Clark
Cottonwoods in morning fog - Lamar Valley, National Park, WY (c) Jim Clark
Cottonwoods in Spring - Yellowstone National Park, WY (c) Jim Clark
Crackling Lake - Norris Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Crested Pool - Norris Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Doublet Pool - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Douglas Fir on hillside - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Douglas Fir Snag - Upper Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Druid Peak - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Ear Spring - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Early Morning at Artist Paint Pots - Yellowstone National Park, WY (c) Jim Clark
Spring Morning Vista - Yellowstone National Park, WY (c) Jim Clark
Electric Peak - Yellowstone National Park, WY (c) Jim Clark
Elk Herd - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Afternoon Light on hills near Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Summer Rainbow - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Firehole Falls - Yellowstone National Park, WY (c) Jim Clark
Firehole Falls - Yellowstone National Park, WY (c) Jim Clark
Cascade on Firehole River - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Firehole River - Fountain Flat Drive - Yellowstone National Park, WY (c) Jim Clark
Firehole River - Fountain Flat Drive - Yellowstone National Park, WY (c) Jim Clark
Firehole River - Yellowstone National Park, WY (c) Jim Clark
Evening Light from Upper Terrace - Hot Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Firehole River - Fountain Flat Drive - Yellowstone National Park, WY (c) Jim Clark
Asters and Fireweed - Petrified Tree Trail - Yellowstone National Park, WY (c) Jim Clark
Fireweed - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Petrified Tree Trail - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Petrified Tree Trail - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Fireweed and Logs - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Gardiner MT (c) Jim Clark
Gardiner MT (c) Jim Clark
Gardiner MT (c) Jim Clark
Gardner River - Yellowstone National Park, WY (c) Jim Clark
Gardner River - Yellowstone National Park, WY (c) Jim Clark
Gardner River - Yellowstone National Park, WY (c) Jim Clark
Gardner River - Yellowstone National Park, WY (c) Jim Clark
Gardner River - Yellowstone National Park, WY (c) Jim Clark
Gibbon Falls - Yellowstone National Park, WY (c) Jim Clark
Glacial Hills near Gardiner - Yellowstone National Park, WY (c) Jim Clark
Golden-mantled Ground Squirrel - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Golden-mantled Ground Squirrel - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Golden-mantled Ground Squirrel - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Golden-mantled Ground Squirrel - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Grand Prismatic Spring - Midway Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Grand Prismatic Spring - Midway Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Grand Canyon of the Yellowstone National Park, WY (c) Jim Clark
Grand Geyser - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Grand Geyser - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Great Fountain Geyser - Firehole Lake Drive - Yellowstone National Park, WY (c) Jim Clark
Great Horned Owl - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Great Horned Owl - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Grizzly Bear - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Grizzly Bear - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Harlequin Ducks - Yellowstone River - Yellowstone National Park, WY (c) Jim Clark
Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Least Chipmunk - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Least Chipmunk - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Least Chipmunk - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Least Chipmunk - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Ledge Geyser - Norris Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Ledge Geyser - Norris Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Ledge Geyser - Norris Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Lichen on Boulder in Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Little Brown Bats - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Lower Falls of the Yellowstone - Yellowstone National Park, WY (c) Jim Clark
Lower Falls of the Yellowstone - Yellowstone National Park, WY (c) Jim Clark
Lower Falls of the Yellowstone - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace after sunset - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace after sunset - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Lower Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Main Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Main Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Main Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Main Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Rainbow over Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Rainbow over Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Rainbow over Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Sunrise Moment - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Mount Washburn - Yellowstone National Park, WY (c) Jim Clark
Mule Deer - Slough Creek - Yellowstone National Park, WY (c) Jim Clark
Obsidian Creek - Yellowstone National Park, WY (c) Jim Clark
Obsidian Creek - Yellowstone National Park, WY (c) Jim Clark
Orange Spring Mound - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Orange Spring Mound - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Orange Spring Mound - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Orange Spring Mound - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Orange Spring Mound - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Orange Spring Mound - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Pebbles in Yellowstone River near Tower Falls - Yellowstone National Park, WY (c) Jim Clark
American Pika - Yellowstone National Park, WY (c) Jim Clark
American Pika - Yellowstone National Park, WY (c) Jim Clark
American Pika - Yellowstone National Park, WY (c) Jim Clark
American Pika - Yellowstone National Park, WY (c) Jim Clark
American Pika - Yellowstone National Park, WY (c) Jim Clark
Pinwheel Geyser & Thermal Colors - Norris Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Pinwheel Geyser & Thermal Colors - Norris Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Porcelain Basin - Norris Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Pronghorn Buck - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Pronghorn Buck - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Pronghorn Buck - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Pronghorn Buck - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Pronghorn Buck - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Pronghorn - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Pronghorn - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Common Raven - Yellowstone National Park, WY (c) Jim Clark
Common Raven - Yellowstone National Park, WY (c) Jim Clark
Common Raven - Yellowstone National Park, WY (c) Jim Clark
Roaring Mountain - Yellowstone National Park, WY (c) Jim Clark
Sawmill Geyser - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
August Morning Scene near Slough Creek - Yellowstone National Park, WY (c) Jim Clark
August Morning Scene near Slough Creek - Yellowstone National Park, WY (c) Jim Clark
August Morning at Artist Paint Pots - Yellowstone National Park, WY (c) Jim Clark
Scene near Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Scene near Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Silca-coated Trees - Upper Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Spring Morning Light on Hillside - Yellowstone National Park, WY (c) Jim Clark
August Storm Clouds - Blacktail Plateau - Yellowstone National Park, WY (c) Jim Clark
Stream near Tower Falls - Yellowstone National Park WY (c) Jim Clark
Lamar Valley in Summer - Yellowstone National Park, WY (c) Jim Clark
Lamar Valley in Summer - Yellowstone National Park, WY (c) Jim Clark
Sunset Clouds over Yellowstone National Park, WY (c) Jim Clark
Thermals near Fountain Paint Pots - Yellowstone National Park, WY (c) Jim Clark
Thermal Activity - Midway Geyser Basin - Yellowstone National Park, WY (c) Jim Clark
Thermals near Gibbon Meadows - Yellowstone National Park, WY (c) Jim Clark
Tower Falls - Yellowstone National Park, WY (c) Jim Clark
Tower Falls - Yellowstone National Park, WY (c) Jim Clark
Trout Lakes - Yellowstone National Park, WY (c) Jim Clark
Uinta Ground Squirrel - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Uinta Ground Squirrel - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Undine Falls - Lamar Valley - Yellowstone National Park, WY (c) Jim Clark
Upper Terrace - Mammoth Hot Springs - Yellowstone National Park, WY (c) Jim Clark
Scene at Mud Volcano Trail - Yellowstone National Park, WY (c) Jim Clark
View from Mount Washburn - Yellowstone National Park, WY (c) Jim Clark
View from Mount Washburn - Yellowstone National Park, WY (c) Jim Clark
View from Mount Washburn - Yellowstone National Park, WY (c) Jim Clark
View from Mount Washburn - Yellowstone National Park, WY (c) Jim Clark
Western Cedar Tree along Gardner River - Yellowstone National Park, WY (c) Jim Clark
White Dome Geyser - Firehold Lake Drive - Yellowstone National Park, WY (c) Jim Clark
Wildflowers at Dunraven Pass - Yellowstone National Park, WY (c) Jim Clark
Yarrow in August - Yellowstone National Park, WY (c) Jim Clark
Yellow-bellied Marmot - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Yellow-bellied Marmot - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Yellow-bellied Marmot - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Yellow-bellied Marmot - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Yellow-bellied Marmot - Sheepeater Cliffs - Yellowstone National Park, WY (c) Jim Clark
Yellowstone River from Inspiration Point - Yellowstone National Park, WY (c) Jim Clark
Grand Canyon of the Yellowstone - Yellowstone National Park, WY (c) Jim Clark
Grand Canyon of the Yellowstone - Yellowstone National Park, WY (c) Jim Clark
Grand Canyon of the Yellowstone - Yellowstone National Park, WY (c) Jim Clark
Yellowstone River near Tower Falls - Yellowstone National Park, WY (c) Jim Clark