 Alum Cave in the Great Smoky Mountains National Forest.
 Sinagua culture petroglyph, near Montezuma Well. Coconino National Forest, Arizona.
 Log cabins at Roaring Fork Motor Trail in Great Smoky Mountains National Forest.
 Spring wildflowers, Tonto National Forest, East of Phoenix, Arizona.
 WA14516-00...WASHINGTON - Winter campsite on Suntop Mountain in the Baker-Snoqualmie National Forest.
 Last Light, Ventana Wilderness, Los Padres National Forest, Big Sur, Monterey County, California
 WA14515-00...WASHINGTON - Winter campsite on Suntop Mountain in the Baker-Snoqualmie National Forest.
 GB - WALES: Snowdonia National Forest
 Lake Sabrina at sunset with fall colored aspens Inyo National Forest California
 Tutoko Valley, Fiordland National Park, South Island, New Zealand
 Maroon Bells and wildflowers, White River National Forest, Aspen, Colorado USA
 Charlton Lake, Deschutes National Forest, Cascade Mountains, Oregon.
 Maroon Bells under snow and Maroon Lake, White River National Forest, Aspen, Colorado USA
 The Pecos Wilderness is a protected wilderness area within the Santa Fe National Forest and Carson National Forest.
 Maroon Bells reflected on Maroon Lake, White River National Forest, Aspen, Colorado USA
 USA, California, Cleveland National Forest, Touris looking at sunset
 Gunnison National Forest and Mt. Crested Butte (12,162 ft.), near Crested Butte, Colorado USA
 Man looking at mount humphreys, Sierra National Forest, California, USA
 Gothic Mountain (12,631 ft.) reflected on pond, Gunnison National Forest, near Crested Butte, Colorado USA
 Man looking at view at sunset, Cleveland National Forest, California, America, USA
 Warner Lake, La Sal Mountains. Manti La Sal National Forest, Utah.
 cascades in the Smoky Mountains of Tennessee, USA.
 Spring wildflowers, Tonto National Forest, East of Phoenix, Arizona.
 Autumn sunrise in the Smoky Mountains National Park.
 Sagaura cactus, Tonto National Forest, East of Phoenix, Arizona.
 WA14514-00...WASHINGTON - Winter campsite on Suntop Mountain in the Baker-Snoqualmie National Forest.
 Salt River, Tonto National Forest, East of Phoenix, Arizona.
 Autumn in the Smoky Mountains National Park.
 Field of Lupine wildflowers along Turnagain Arm, Chugach National Forest, Alaska.
 Tutoko Valley, Fiordland National Park, South Island, New Zealand
 Autumn sunset in the Smoky Mountains National Park.
 Crane Prairie Reservoir and Mount Bachelor at dawn, Deschutes National Forest, central Oregon.
 Autumn sunrise in the Smoky Mountains National Park.
 The Pecos Wilderness is a protected wilderness area within the Santa Fe National Forest and Carson National Forest.
 Smoky Mountains, Tennessee, USA mountainscape at newfound gap.
 Gunnison National Forest and Mt. Crested Butte (12,162 ft.), near Crested Butte, Colorado USA
 Ancient bristlecone pine on slope of Mt. Evans at Mt. Goliath Natural Area. Arapaho National Forest, Colorado.
 Mature man standing on a mountain at sunset, Cleveland National Forest, USA
 Female skier tours the Center Ridge area in Turnagain Pass of Chugach National Forest, Alaska
 Mountains and Lake Chuzenji in Nikko, Japan.
 Kanarra Creek Canyon with hiker. Utah. Dixie National Forest
 Smoky Mountains landscape at Newfound Gap in autumn.
 Wildflowers, hiker on Trail No. 401 and Gothic Mountain (12,631 ft.), Gunnison National Forest, near Crested Butte, Colorado USA
 Silver Mountain, San Juan National Forest, Colorado
 Sun shining through the trees, forest, Mount Aspiring National Park, Otago, Southland, New Zealand
 Tufa spires and tower formations of calcium carbonate, Inyo National Forest Scenic Area, California, USA
 Wenatchee National Forest, Washington: Fall colors reflecting on the Wenatchee River in Tumwater Canyon
 Field of Lupine wildflowers along Turnagain Arm, Chugach National Forest, Alaska.
 Tufa spires and tower formations of calcium carbonate, Inyo National Forest Scenic Area, California, USA
 Mt. Alice viewed through driftwood, Chugach National Forest, Seward, Alaska.
 Bristlecone Pine (Pinus longaeva), Ancient Bristlecone Pine Forest Park, Inyo National Forest, Bishop, California, USA
 A field of lupine along Turnagain Arm, Chugach National Forest, Alaska.
 The Pecos Wilderness is a protected wilderness area within the Santa Fe National Forest and Carson National Forest.
 Lifeguard house, Luquillo Public Beach and El Yunque shrouded in clouds, Luquillo, Puerto Rico
 Low Angle View of a Mountain in Fog and a Dry Creek at Fall, White Mountains National Forest, New Hampshire
 Weathered Crack in Engelmann Spruce, Lizard Head Wilderness, San Juan National Forest, Colorado
 Mature man standing on a mountain at sunset, Cleveland National Forest, USA
 Female skier tours the Center Ridge area in Turnagain Pass of Chugach National Forest, Alaska
 USA, Idaho, Boise, Boise National Forest, Long Creek Road, Field in Mountains
 Waterfall with ladder in Kanarra Creek. Utah. Dixie National Forest
 USA, Idaho, Custer County, Custer, Stanley Lake, National Forest Development, Lakeside view of Mountains
 pathway through Everglades National Forest, Florida, USA
 South Sister, Sparks Lake, Deschutes National Forest, Oregon
 USA, Utah, Aerial view of Uinta National Forest and Mirror Lake from atop of Bald Mountain
 Sun shining through the trees, forest, Mount Aspiring National Park, Otago, Southland, New Zealand
 Fly fishing the Lewis River, Gifford Pinchot National Forest, Washington.
 Panorama of Mount Washington and other Mountains in the White Mountains National Forest in New Hampshire
 South Ice Cave, Deschutes National Forest, Oregon
 Ranchlands west of Rt. 287 towards the Shoshone National Forest
 Aspen grove in the La Sal Mountains. Summer. Manti La Sal National Forest, Utah.
 A field of lupine along Turnagain Arm, Chugach National Forest, Alaska.
 The Pecos Wilderness is a protected wilderness area within the Santa Fe National Forest and Carson National Forest.
 Winter snow on Schnebly Hill, Coconino National Forest, Sedona, Arizona.
 A woman stands at the mouth of an ice cave.
 Winter in the Chugach National Forest, Alaska.
 Four Horses, Teton National Forest, Wyoming
 Sunrise with golden sky and mist lying in valley below forest at Tooloom National Park, NSW Australia.
 Panorama of watchful Mule Deer jumping through sagebrush in early morning at Jardine Road Gardiner Montana in winter
 Waterfall with ladder in Kanarra Creek. Utah. Dixie National Forest
 Scenes of the White Mountain National Forest from Bear Notch Road, New Hampshire.
 Trees in the Monongahela National Forest near Maysville, West Virginia, display the full spectrum of autumn colors in the early fall.
 Aspen, Boulder Mountain, Dixie National Forest, Utah
 USA, California, Inyo National Forest, Path to Mountains
 Muir Creek and native bush, Pleasant Flat, Haast Pass, Mt Aspiring National Park, West Coast, South Island, New Zealand
 Fly fishing the Lewis River, Gifford Pinchot National Forest, Washington.
 Fall Foliage, Angeles National Forest / Glendora, California
 Tree frog, McKenzie Wild & Scenic River, Willamette National Forest, Oregon
 Fall Foliage, Angeles National Forest / Glendora, California
 'Sunshine Mountain' autumn 'San Juan Mountains' 'Uncompahgre National Forest' Colorado
 Close up of a woman hiking on the Perseverance Lake trail in Tongass National Forest near Ketchikan, Southeast Alaska, Summer
 The Pecos Wilderness is a protected wilderness area within the Santa Fe National Forest and Carson National Forest.
 Mt. Nantai and Lake Chuzenji in Nikko, Japan.
 A woman stands at the mouth of an ice cave.
 Winter in the Chugach National Forest, Alaska.
 Dechambeau Ponds at Dawn, Mono Basin National Forest Scenic Area, California
 Winter in the Chugach National Forest, Seward, Alaska.
 White Mountains National Forest, New Hampshire, New England, United States of America, North America
 Waterfall with ladder in Kanarra Creek. Utah. Dixie National Forest
 Fire damaged trees and forest in Payette National Forest in Valley County, Indiana.
 Fiery red ground cover carpets the Rohrbaugh Plains in fall color, located in the Dolly Sods Wilderness in the Monongahela National Forest, West Virgi
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