1311-931 - A circular walkway for the Long Logs Trail in Petrified Forest National Park Arizona. This used to be a parking area before the Park Service turned it into a footpath.

1311-930 - A paved walkway leading to the entrance of the Long Logs Trail in Petrified Forest National Park Arizona. This area used to be a parking area before the Park Service turned it into a footpath.

1311-929 - A very long fossilized tree along the Long Logs Trail at Petrified Forest National Park Arizona.

1311-928 - View of a bentonite hill along the Long Logs Trail in Petrified Forest National Park Arizona.

1311-927 - The sun shade shelter along the Long Logs Trail at Petrified Forest National Park Arizona.

1311-926 - 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.

1311-925 - The map sign at the gateway for the Long Logs Trail and Agate House in Petrified Forest National Park Arizona.

1311-924 - The gateway to the Long Logs Trail and Agate House in Petrified Forest National Park Arizona.

1311-923 - Sign marking the Jim Camp Wash along the main road of Petrified Forest National Park Arizona. This is along the path to the Long Logs Trail.

1311-922 - A sign along the main road in Petrified Forest National Park pointing the way to the Long Logs Trail, and Agate House.

1311-909 - Steps along the Giant Logs Trail leading to a scenic overlook in Petrified Forest National Park Arizona.

1311-908 - A scenic overlook on the west side of the Giant Logs Trail at Petrified Forest National Park Arizona.

1311-907 - A scenic overlook on the west side of the Giant Logs Trail at Petrified Forest National Park Arizona.

1311-906 - A divide in the trail loop for the Giant Logs trail at Petrified Forest National Park Arizona. On the upper left is the Rainbow Forest Museum.

1311-905 - A warning sign to stay on the trail to the historic Agate House in Petrified Forest National Park Arizona.

1311-901 - A warning sign to stay on the trail to the historic Agate House in Petrified Forest National Park Arizona.

1311-900 - The paved trail that leads to the historic Agate House in Petrified Forest National Park Arizona.

1311-899 - A divide in the trail leading to the historic Agate House in Petrified Forest National Park Arizona.

1178-44393 - USA, New Mexico, Hands of boy hugging aspen tree in Santa Fe National Forest

844-33412 - View of couple on trail at Storms River Mouth, Tsitsikamma National Park, Garden Route National Park, South Africa, Africa

1242-584 - View of Aoraki (Mount Cook) from the Hooker Valley Trail in Aoraki (Mount Cook) National Park, UNESCO World Heritage Site, Southern Alps, South Island, New Zealand, Pacific

1242-583 - Swinging bridge and mountain views on the Hooker Valley Trail in Aoraki (Mount Cook) National Park, UNESCO World Heritage Site, Southern Alps, South Island, New Zealand, Pacific

1242-582 - Mountain views from the Hooker Valley Trail in Aoraki (Mount Cook) National Park, UNESCO World Heritage Site, Southern Alps, South Island, New Zealand, Pacific

1242-581 - Glacial lake at the end of the Hooker Valley Trail in Aoraki (Mount Cook) National Park, UNESCO World Heritage Site, Southern Alps, South Island, New Zealand, Pacific

1242-580 - Mountain views from the Hooker Valley Trail in Aoraki (Mount Cook) National Park, UNESCO World Heritage Site, Southern Alps, South Island, New Zealand, Pacific

1311-801 - The Powell Memorial at Grand Canyon National Park, Arizona, United States of America, North America

832-404304 - Finished the Taft point trekking in Yosemite National Park in sunset. United States

832-404303 - A young winged seated Taft point looking at Yosemite National Park and El Capitan in sunset. United States

832-404291 - The zigzag climb of the beautiful Navajo Loop Trail in Bryce National Park, Utah. United States

1116-52805 - Family on a mountain top above the clouds at Haleakala watching the sunrise over the Pacific Coast, Haleakala National Park, Maui, Hawaii, United States of America

1116-52803 - Three Southern giraffes (Giraffa giraffa angolensis) walk along sandy track in Chobe National Park, Botswana

1112-8659 - A waterfall running through the Mossy Cave Trail in Bryce Canyon National Park, Utah, United States of America, North America

1112-8658 - A view from the Mossy Cave Trail of red rock and hoodoos, Bryce Canyon National Park, Utah, United States of America, North America

1112-8655 - A waterfall running through the Mossy Cave Trail in Bryce Canyon National Park, Utah, United States of America, North America

1112-8651 - A stream running through the Mossy Cave Trail in Bryce Canyon National Park, Utah, United States of America, North America

1112-8650 - A stream running through the Mossy Cave Trail in Bryce Canyon National Park, Utah, United States of America, North America

832-403409 - Woman hikers walking on Valbona Valley trail next to trees, Theth National Park, Albanian Alps, Albania, Europe

832-403408 - Hikers walking on the Valbona Valley trail alongside trees, Theth National Park, Albanian Alps, Albania, Europe

1311-668 - The trail junction for the Ken Patrick Trail and Uncle Jim Trail at Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-676 - Sign marking the Nankoweap Trail for the Saddle Mountain Wilderness that borders Grand Canyon National Park, Arizona, United States of America, North America

1311-699 - An overlook along the Transept Trail with Oza Butte on the right at Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-700 - The Transept Trail sign where it branches off from the Bright Angel Point Trail on the North Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-698 - An overlook along the Transept Trail with Oza Butte just right of center at Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-697 - The Transept Trail sign where it branches off from the Bright Angel Point Trail on the North Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-696 - The junction where the Transept Trail meets the Bright Angel Point Trail on the North Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-695 - Bright Angel Point trail sign pointing the way to the overlook on Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-694 - An overlook along the Transept Trail at Grand Canyon North Rim at twilight, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1358-176 - Dry stone wall and gate on a trail that follows the southern shore of Ullswater, Lake District National Park, UNESCO Worl Heritage Site, Cumbria, England, United Kingdom, Europe

1359-791 - Hiking trail, Sector Palmas de Ocoa, La Campana National Park, Cordillera De La Costa, Quillota Province, Valparaiso Region, Chile, South America

1311-617 - View from Picnic Hill along the Thumb Butte day use hiking trail covered in winter snow and ice, Prescott National Forest, west of Prescott, Arizona, United States of America, North America

844-28730 - View of trail lights through Mancha Blanca, Timanfaya National Park at dusk, Mancha Blanca, Lanzarote, Las Palmas, Canary Islands, Spain, Atlantic, Europe

1359-351 - Beaver trail (castorera) and area of beaver dams, Tierra del Fuego National Park, Patagonia, Argentina, South America

1311-604 - The cliffs of Bright Angel Canyon at Grand Canyon viewed from the start of Garden Creek Canyon along Bright Angel Trail, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-603 - A sign along the Bright Angel Trail in Grand Canyon warning that the plants in this area are very fragile, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-602 - The cliffs of Bright Angel Canyon along the Bright Angel Trail in winter near midday on the South Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-601 - Grand Canyon viewed from the Bright Angel Trail in winter just past the 1.5 Mile Rest House after sunrise, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-600 - The cliffs of Bright Angel Canyon along the Bright Angel Trail in winter at sunrise on the South Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-599 - A winter sunrise view of Grand Canyon Arizona from Bright Angel Trail on the South Rim just past the second tunnel, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-598 - The second tunnel along Bright Angel Trail in winter at sunrise on the South Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-597 - A winter dawn view of Grand Canyon from Bright Angel Trail on the South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-596 - The first tunnel along Bright Angel Trail in winter under Moonlight on the South Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-595 - View of Yuma Point from Hermit Trail in winter at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-593 - View of Hermit Canyon from Dripping Springs trail at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-592 - Hermit Canyon at Grand Canyon viewed from the east side of Yuma Point along the Boucher Trail with Pima Point on the upper right, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-591 - View of Hermit Canyon and Hermit Basin from the Boucher Trail at Grand Canyon with Pima Point on the upper left, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1311-590 - View of Hermit Canyon from the east side of Yuma Point at Grand Canyon Arizona along the Boucher Trail with Pima Point on the upper right, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

1179-6061 - Family enjoying walking in a frozen snowy forest on a winter trail, Riisitunturi National Park, Posio, Lapland, Finland

1311-572 - A field of hoodoos along the Red Basin Trail in Petrified Forest National Park Arizona called Pharaoh's Garden.

1311-564 - View of Troll Hill at Petrified Forest National Park Arizona along the Red Basin Trail.

1311-565 - Slabs of stone along the Red Basin Trail called the Tabletops at Petrified Forest National Park Arizona.

1311-563 - The shallow pond at Petrified Forest National Park Arizona called Dry Creek Tank along the Red Basin Trail.

1311-562 - A giant petrified log balanced on a sandstone pedestal in Petrified Forest National Park Arizona along the Red Basin Trail.

1179-6055 - Family exploring the snowy forest walking on a trail with snowshoes, Oulanka National Park, Ruka Kuusamo, Lapland, Finland

1179-6052 - Aerial view of woman snowshoeing on trail in the snowcapped forest at twilight, Oulanka National Park, Ruka Kuusamo, Lapland, Finland

1359-97 - Kanarra Creek hiking trail through slot canyon, Kolob Canyons section of Zion National Park, Utah, Western United States, USA

1359-95 - Scenic view of Grand Canyon from South Kaibab Trail, Grand Canyon National Park, Arizona, USA

1359-94 - Scenic view of Grand Canyon from South Kaibab Trail, Grand Canyon National Park, Arizona, USA

1359-74 - Scenic view of Grand Canyon from Ooh Aah Point on South Kaibab Trail, Grand Canyon National Park, Arizona, USA

1359-71 - Gorge with natural arch by Navajo Loop Trail, Bryce Canyon National Park, Utah, USA

1359-70 - Popular rock formation (hoodoo) named Thor's Hammer taken from Navajo Loop Trail, Bryce Canyon National Park, Utah, USA

1112-7145 - A wild burro near the Mosaic Canyon Trail in Death Valley National Park, California, United States of America, North America

1112-7146 - A mountain biker in Titus Canyon in Death Valley National Park, California, United States of America, North America

1112-7138 - Desert collared lizard (Crotaphytus bicinctores), Mosaic Canyon Trail, Death Valley National Park, California, United States of America, North America

1112-7135 - A view of Mosaic Canyon Trail in Death Valley National Park, California, United States of America, North America

1112-7136 - A view of Mosaic Canyon Trail in Death Valley National Park, California, United States of America, North America

1112-7137 - Desert collared lizard (Crotaphytus bicinctores), Mosaic Canyon Trail, Death Valley National Park, California, United States of America, North America

1311-539 - Ancient Indian petroglyphs along the Onyx Trail at Petrified Forest National Park, Arizona, United States of America, North America

1311-540 - View from the summit of Squared Off Butte along the Onyx Trail in Petrified Forest National Park, Arizona, United States of America, North America

1112-6884 - Fall color change amongst the trees and shrubs on the Rock Creek Trail in Denali National Park, Alaska, United States of America, North America

1112-6886 - Fall color change amongst the trees and shrubs on the Rock Creek Trail in Denali National Park, Alaska, United States of America, North America

1218-1584 - Woman looking out on Kew Mae Pan Nature Trail at Doi Inthanon National Park, Chiang Mai, Thailand, Southeast Asia, Asia

1311-470 - Pile of petrified wood along the trail to Martha's Butte in Petrified Forest National Park Arizona.

1311-476 - A petrified log along the trail to Martha's Butte in Petrified Forest National Park Arizona.

1311-469 - A petrified log along the trail to Martha's Butte in Petrified Forest National Park Arizona.

1113-107718 - Point Pelee National Park, Marsh Board Walk, canoeists

832-396258 - Hikers on suspension bridge in autumnal forest, Grove of the Patriarchs Trail, Mount Rainier National Park, Washington, USA, North America

832-396199 - Snowshoe hiker in winter landscape, trail of snowshoes, behind Admonter Reichenstein, on the way to Ebner Alm, Johnsbacher Almenrunde, Johnsbach, Gesaeuse National Park, Styria, Austria, Europe

746-91437 - Signpost for hikers. Winter at Mount Lusen in National Park Bavarian Forest (Bayerischer Wald), Europe, Central Europe, Germany, Bavaria

746-91436 - Snowy hiking path. Winter at Mount Lusen in National Park Bavarian Forest (Bayerischer Wald), Europe, Central Europe, Germany, Bavaria

1350-6316 - No Name Trail sign, Oregon Caves National Monument, Oregon.