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Sign along the path to the Long Logs Trail, marking the Jim Camp Wash along the main road of Petrified Forest National Park, Arizona, United States of America, North America

The sun shade shelter along the Long Logs Trail at Petrified Forest National Park, Arizona, United States of America, North America

View from below a ridge that overlooks the Jim Camp Wash on the south end of Petrified Forest National Park, Arizona, United States of America, North America

Hiking in the first snow of the winter, Sawtooth Mountains, Rocky Mountains, Idaho, United States of America, North America

Beautiful idyllic hiking trail in the early morning sun light with mountain chain in the background, Monte Rosa, Piedmont, Italian Alps, Italy, Europe

Hiking trail in alpine landscape facing Monte Rosa with lush forest and meadows in moraine landscape, Italian Alps, Italy, Europe

Scenic view of hoodoos and rock formations, Rim Trail near Sunrise Point, Bryce Canyon National Park, Utah, United States of America, North America

Mist rising on Bunnyrabbit Lake at dawn on La Cloche Silhouette Trail, Killarney Provincial Park, Ontario, Canada, North America

Giant redwood trees on the Trillium Trail, Redwood National and State Parks, UNESCO World Heritage Site, California, United States of America, North America

Temperate rain forest on the Maple Glade Trail, Quinault Rain Forest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America

Town centre, Mindo, a centre for tourism in the Cloud Forest involving zip lining, rafting, bird watching and nature tours, Mindo, Ecuador, South America

East slopes of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America

A warning sign to stay on the trail to the historic Agate House in Petrified Forest National Park, Arizona, United States of America, North America

A scenic overlook on the west side of the Giant Logs Trail at Petrified Forest National Park, Arizona, United States of America, North America

View of a bentonite hill along the Long Logs Trail in Petrified Forest National Park, Arizona, United States of America, North America

Outdoor wooden sculpture gallery on the Hill of Witches, near Juodkrante, Curonian Spit, Lithuania, Baltic States, North Europe

Forest in Bryce canyon surrounded by hoodoos, Bryce Point, Bryce Canyon National Park, Utah, United States of America, North America

Pelisor Castle complex in the Carpathians Mountains near the mountain resort of Sinaia, Wallachia region, Romania

Peles Castle in the Carpathian Mountains near the mountain resort of Sinaia, Wallachia region, Romania

View of Sunset Crater Volcano from the east slope of the Lenox Crater Trail, the dark gray soil is volcanic pumice, Arizona, United States of America, North America

Giant redwoods on the Lady Bird Johnson Trail in Redwood National Park, UNESCO World Heritage Site, California, United States of America, North America

Dense ferns on the Marymere Falls Trail, Quinault Rain Forest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America

Waterfall on the Marymere Falls Trail, Quinault Rain Forest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America

A sheer cliff of rock jutting out from the Blue Mesa along the Billings Gap Trail in Petrified Forest National Park, Arizona, United States of America, North America

Roaring Creek waterfalls, Appalachian Trail, Blue Ridge Mountains, North Carolina, United States of America, North America

A scenic overlook on the west side of the Giant Logs Trail at Petrified Forest National Park, Arizona, United States of America, North America

The paved path, that used to be an old road, leading to the Long Logs Trail and Agate House in Petrified Forest National Park, Arizona, United States of America, North America

A dry waterfall on the west side of Hamilili Point, Hamilili being a Zuni word for petrified wood, next to a hoodoo on the south end of Petrified Forest National Park, Arizona, United States of America, North America

The North Valley below the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

Woman hiking along The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America

The gateway to the Long Logs Trail and Agate House in Petrified Forest National Park, Arizona, United States of America, North America

Blackforestline suspension bridge, Todtnau, Schwarzwald (Black Forest), Baden-Wurttemberg, Germany, Europe

View of the Petrified Forest National Park from the Long Logs Trail on the south end of the park, Arizona, United States of America, North America

Hills of Bentonite Clay called Teepees at the start of the Blue Forest Trail in Petrified Forest National Park, Arizona, United States of America, North America

Early light on Mount Rainier from the Burroughs Mountain Trail, Mount Rainier National Park, Washington State, United States of America, North America

Man enjoying the view along The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America

Point Imperial view from Ken Patrick Trail at Grand Canyon North Rim with Mount Hayden the pointed peak left of center, Arizona, United States of America, North America

Large rock spires on the cliff of Transept Canyon along the Widforss Trail at Grand Canyon North Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

Roaring Creek waterfalls, Appalachian Trail, Blue Ridge Mountains, North Carolina, United States of America, North America

A female Elk that came out of the forest along the Greenway Trail that runs between Pima Point and Monument Creek Vista, Grand Canyon, Arizona, United States of America, North America

The Giant Petrified Logs of Petrified Forest National Park, located along a trail behind the Rainbow Museum, Arizona, United States of America, North America

An island of rock just off the Billings Gap Trail at Petrified Forest National Park, Arizona, United States of America, North America

Hiker amongst giant redwood trees on the Trillium Trail, Redwood National and State Parks, UNESCO World Heritage Site, California, United States of America, North America

The eastern edge of the Clam Bed Mesa along the Red Basin Trail in Petrified Forest National Park, Arizona, United States of America, North America

Crumbling islands of rock near Hamilili Point in Petrified Forest, Arizona, United States of America, North America

Star trail and snowy trees frame the wooden hut and Sass De Putia, Passo Delle Erbe, Funes Valley, South Tyrol, Italy, Europe

Salt covered hills of Bentonite in the Petrified Forest National Park along the Blue Forest Trail, Arizona, United States of America, North America

Salt covered hills of Bentonite in the Petrified Forest National Park along the Blue Forest Trail, Arizona, United States of America, North America

Hiker amongst giant redwood trees on the Trillium Trail, Redwood National and State Parks, UNESCO World Heritage Site, California, United States of America, North America

Views from the Skyline Trail of Mount Rainier National Park, Washington State, United States of America, North America

Fall color change amongst the trees and shrubs on the Rock Creek Trail in Denali National Park, Alaska, United States of America, North America

A divide in the trail leading to the historic Agate House in Petrified Forest National Park, Arizona, United States of America, North America

A very long fossilized tree along the Long Logs Trail at Petrified Forest National Park, Arizona, United States of America, North America

A paved walkway leading to the entrance of the Long Logs Trail in Petrified Forest National Park, Arizona, United States of America, North America

A middle-aged couple happy together on a trail in a tropical forest or hotel garden, Brazil, South America

Grand Canyon North Rim from the end of the Cliff Spring Trail near Cape Royal, Arizona, United States of America, North America

A trail in the snow leads to the traditional huts of Blatten, Zermatt, Canton of Valais (Wallis), Switzerland, Europe

Among giant redwoods on the Boy Scout Tree Trail in Jedediah Smith Redwoods State Park, UNESCO World Heritage Site, California, United States of America, North America

Early light on Mount Rainier from the Burroughs Mountain Trail, Mount Rainier National Park, Washington State, United States of America, North America

Early light on Mount Rainier from the Burroughs Mountain Trail, Mount Rainier National Park, Washington State, United States of America, North America

Brothers ride their One-Wheels on a single track mountain biking trail next to the Potomac River. Bethesda, Maryland, United States of America, North America

Bright Angel Canyon viewed from Coconino Overlook along North Kaibab Trail on Grand Canyon North Rim, Arizona, United States of America, North America

Foot Bridge, Trail to Sol Duc Falls, Rain Forest, Olympic National Park, UNESCO World Heritage Site, Washington, United States of America, North America

Panorama view of the Petrified Forest National Park from the First Forest Trail, Arizona, United States of America, North America

Star trail in the night sky over a lone tree on hill and Schreckhorn peak, Sumiswald, Emmental, Bern canton, Switzerland, Europe

Car trails lights on narrow bends of Maloja Pass mountain road, Engadine, Canton of Graubunden, Switzerland, Europe

A large petrified log along the Blue Mesa Trail in Petrified Forest National Park, Arizona, United States of America, North America

Family exploring the snowy forest walking on a trail with snowshoes, Oulanka National Park, Ruka Kuusamo, Lapland, Finland

Linkmenas lake seen from the Ginuciai mound where the famous Linknenys castle stood during the 13th to 15th centuries, Ginuciai, Aukstaitija National Park, Lithuania,Europe

Light trails on the hairpin curves of Maloja Pass mountain road at night, Engadine, Canton of Graubunden, Switzerland, Europe

Beautiful sight on The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America

View of the Petrified Forest National Park from the Long Logs Trail on the south end of the park, Arizona, United States of America, North America

Path among California redwoods, Armstrong Woods State Park, near Guerneville, California, United States of America, North America

Salt covered hills of Bentonite in the Petrified Forest National Park along the Blue Forest Trail, Arizona, United States of America, North America

View from the Blue Mesa Trail in Petrified Forest National Park, Arizona, United States of America, North America