Backlit image of workers loaded with sulphur pieces cut out from a sulphur mine on Ijen crater lake, Java, Indonesia, Southeast Asia, Asia

Guadalupe fur seal (Arctocephalus townsendi), at new haul out on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America

Looking out of a tent at White Rocks campsite, Piedras Blancas, 6200m, Aconcagua 6962m, highest peak in South America, Aconcagua Provincial Park, Andes mountains, Argentina, South America

Elephant calf climbing out of the water hole in Hwange National Park, Zimbabwe, Africa

Alligator by Turner River, Everglades, Florida, USAAlligator in Turner River, Everglades, Florida, United States of America

Alligator in Turner River, Everglades, Florida, United States of America

Sulphur carriers climbing out of Kawah Ijen volcano (Ijen crater), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia

Sulphur carriers climbing out of Kawah Ijen volcano (Ijen crater), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia

Alligator by Turner River, Everglades, Florida, USA

Alligator by Turner River, Everglades, Florida, USA

Sailboat that takes tourists out for sunset cruise, Key West, Florida, United States of America, North America

Truck climbing Lachalang Pass, 5065m, out of valley of Zanskar River, Leh-Manali highway, Ladakh, India, Asia

A climber topping out in Custs Gully on Great End, a grade one winter route, with Great Gable in the background, Lake District, Cumbria, England, United Kingdom, Europe

A climber topping out in Custs Gully on Great End, a grade one winter route, Lake District, Cumbria, England, United Kingdom, Europe

Climber bum sliding out of the Great Stone Shoot on Sgurr Alasdair on the Cuillin Ridge, Isle of Skye, Scotland, United Kingdom, Europe

A Polar Bear (Ursus maritimus) shaking its fur after climbing out of the water . Northwest of Nordaustlandet, Svalbard Archipelago, High Norwegian Arctic

Milky Way over the Spreewald in front of Jägerstand silhouette, Germany, Brandenburg, Spreewald

Madagasse in the karst landscape of Tsingy de Bemaraha, Tsingy-de-Bemaraha National Park, Mahajanga, Madagascar, Africa

Man rock climbing, Oak Creek Canyon, Arizona, USA, North America

Young woman and young man sitting on rocks near the camp fire and camping out on the pebble beach of the bay Cala Sisine, Golfo di Orosei, Selvaggio Blu, Sardinia, Italy, Europe

Young Orang-Utan drinking out of Bohorok River, Gunung Leuser National Park, Sumatra, Indonesia, Asia

Man rock climbing at “The Pit” in Sandy’s Canyon, Flagstaff, Arizona, USA

Man rock climbing, Oak Creek Canyon, Arizona, USA, North America

Woman climbing a sanddune at Tin Merzouga, Acacus Mountains or Tadrart Acacus range, Tassili n'Ajjer National Park, Unesco World Heritage Site, Algeria, Sahara, North Africa

Mountain climber ascending Monte Piano climbing route, Alta Pusteria, in front of the Val di Landro Valley, Dolomites, Alto Adige, Italy, Europe

Mountain climber on the Herrensteig climbing route, Kofelwiesen alpine meadows, looking into the valley of Valle di Funes, Alto Adige, Italy, Europe

A confident sunglassed climber in orange helmet and red jacket rests against a rock. He smiles with his arms crossed, showing off his climbing gear in a rugged outdoor setting

Passenger leaving the underground in the "Monument" Station, Mind the Gap, London, England, United Kingdom, Europe

Eurasian red squirrel (Sciurus vulgaris) looks out from behind a tree, Saxony, Germany, Europe

Young woman swinging on a vine in the jungle, tropical rain forest, Taman Negara, Malaysia, Asia

Man climbing a coconut tree, Kerala, South India, India, Asia

Digital Composing, High voltage engineers working on high voltage pylons, Baden-Wuerttemberg, Germany, Europe

Riesenburg cave, natural karst cave ruin of Frankendolomite, geotope, natural monument, in the back climber at rock face, near Engelhardsberg, district of Markt Wiesenttal, Upper Franconia, Franconian Switzerland, Franconia, Bavaria, Germany, Europe

View from the Via Ferrata d'Trincee, climbing route above the Fedaia Pass, looking towards Gran Vernel and Marmolada mountains, Dolomites, above the Fedaia Pass and Lake Fedaia, Trentino, Italy, Europe

Balloon flight over the valley of Goereme, Cappadocia, Turkey, Western Asia

Mountaineers climbing the Hochkoenig, Rocky mountain landscape, Berchtesgaden Alps, Salzburger Land, Austria, Europe

Side view sporty man climbing rock

Santa Claus figurines on the facade of a department store, Erlangen, Middle Franconia, Bavaria, Germany, Europe

Barechested man climbing wall

Mountaineers climbing Saentis over the Lisen ridge, Rotsteinpass in the background, high fog in the valley, Saentis, Appenzell Ausserrhoden, Appenzell Alps, Switzerland, Europe

Via ferrata over the Riffelscharte, hiker in the mountains, view of Eibsee lake and Werdenfelser Land, Wetterstein Mountains, Garmisch-Patenkirchen, Bavaria, Germany, Europe

Mount Aizkorri 1523 meters, the highest in Guipuzcoa. Basque Country. Ascent through San Adrian and return through the Oltza fields. Free goats on top of the mountain

Externsteine sandstone rock formation, nature reserve, Horn Bad Meinberg, Teutoburg Forest, Kreis Lippe district, North Rhine-Westphalia, Germany, Europe

Sulphur carrier climbing out of Kawah Ijen volcano, Ijen crater, Banyuwangi, East Java, Indonesia, Asia

Man climbing wall

A young woman in the cave of San Adrian. Mount Aizkorri 1523 meters, the highest in Guipuzcoa. Basque Country. Ascent through San Adrian and return through the Oltza fields

Mountaineer climbing the Rauhen Kopf, Berchtesgadener Alps, in the back mountain peak Hoher Goell, Bischofswiesen, Berchtesgadener Land, Upper Bavaria, Bavaria, Germany, Europe

Cheetah, Sudan Cheetah, (Acinonyx jubatus soemmeringii), young animal, ten weeks old, in tree, Sudan, captive, Africa

Climbing area Zellerwand, lead climbing, sport climbing, Schleching, Bavaria, Germany, Europe

Mountaineers climbing the Hochkoenig, Rocky mountain landscape with remnants of snow, Berchtesgaden Alps, Salzburger Land, Austria, Europe

Mountaineer on the Lisengrat, narrow ridge path on the ascent to Saentis, Appenzell Ausserrhoden, Appenzell Alps, Switzerland, Europe

Mount Aizkorri 1523 meters, the highest in Guipuzcoa. Basque Country. Ascent through San Adrian and return through the Oltza fields. A young woman in yellow looking at the views on top

Young woman with her backpack standing top mountain looking idyllic view

Alpenroses or Snow-roses (Rhododendron ferrugineum), seen while climbing Hoher Dieb or Gran Ladro Mountain, Ultimo, Val d'Ultimo, Alto Adige, Italy, Europe

Friends arriving at the cave of San Adrian. Mount Aizkorri 1523 meters, the highest in Guipuzcoa. Basque Country. Ascent through San Adrian and return through the Oltza fields

Mount Aizkorri 1523 meters, the highest in Guipuzcoa. Basque Country. Ascent through San Adrian and return through the Oltza fields. A young woman scratching some goats, vertical photo

Mountaineer climbing Saentis over the Lisen ridge, mountain peak above the sea of clouds, high fog in the valley, Saentis, Appenzell Ausserrhoden, Appenzell Alps, Switzerland, Europe

Back view traveller climbing stairs

Hikers climbing to the top of Skala, view of mountains and fjord Faleidfjorden, Loen, Norway, Europe

Lone man climbing out on a subway escalator. Symmetrical underground moving staircase

Hiking trail from the Rossmoosalm to the Huetteneck Alm through the Zwerchwand quarry, Bad Goisern, Salzkammergut, Upper Austria, Austria, Europe

Tourist crossing the via ferrata trail with equipment in the dolomites. Dolomites, Italy, Dolomites, Italy, Europe

Cute little blonde girl climbing on the palm tree on the beach. Summer vacation, childhood and fun concept

Beautiful view of the mountain landscape from the via ferrata trail in the Italian Dolomites, Dolomites, Italy, Europe

Painting of two women on wooden doors, Killarney, Ireland, Europe

Trekking, mountain climbing, view from the crater rim towards climbers descending towards Kibo Hut at the Kibo Saddle, in the distance, the peak of Mount Mawenzi surrounded by clouds, Kilimanjaro, Marangu Route, Tanzania, East Africa, Africa

Family overlooking the beach and sea at a lookout point, Rhossili Beach, Gower Peninsula, Wales, Great Britain, Europe

Eurasian red squirrel (Sciurus vulgaris) looks out behind tree trunk of Pine (Pinus), Berlin, Germany, Europe

View out of a tent in camp II, 2, 6500m, Western Cwm, Mount Everest, Himalaya, Nepal

Koala (Phascolarctos cinereus) adult climbing on tree trunk, Kangaroo Island, South Australia, Australia, Oceania

Young woman climbing to Trolltunga, view into the fjord, Sorfjord, near Odda, Norway, Europe

Climber at sunrise at the summit cross of Ifingers Mountain above Meran, Meran 2000, Alto Adige, Italy, Europe

Painting of two women on wooden doors, Killarney, Ireland, Europe

Tourists leaving and waiting to board a ferry boat at Herreninsel island, Chiemgau, Upper Bavaria, Germany, Europe

Commercial boat navigating on the Parana delta, Tigre, Buenos Aires, Argentina, South America

Schaufelsen rocks near Neidingen, the biggest rocky outcrop in the Upper Danube Valley, with 120 metres its one of the highest non-alpine rock climbing sites in Germany, district of Sigmaringen, Baden-Wuerttemberg, Germany, Europe

Elements set by man to facilitate the route via ferrata. Dolomites, Italy, Dolomites, Italy, Europe

Falkenwand, a rock wall used for climbing, in front of a rocky spur with remains of Burg Unterfalkenstein Castle in the Upper Danube Valley, district of Sigmaringen, Baden-Wuerttemberg, Germany, Europe

Detail, Climber with hand in magnesium bag, Portugal, Europe

Falkenwand, a rock wall used for climbing, between Thiergarten and Neidingen in the Upper Danube Valley, district of Sigmaringen, Baden-Wuerttemberg, Germany, Europe

Climbing wall, climbing tower, Hochheideturm Tower, observation tower, Ettelsberg, Willingen, Upland, Hochsauerland, Sauerland, Hesse, Germany, Europe

Falkenwand, a rock wall used for climbing, between Thiergarten and Neidingen in the Upper Danube Valley, district of Sigmaringen, Baden-Wuerttemberg, Germany, Europe

A mountain rescue technician is descending into a crevasse. When a skier breaks through the snow and tumbles down the glacier, the only way out is being winched out by the rescuers of Air Zermatt.

Beth Rodden and Tommy Callwell hang out on a rock ledge so Tommy can rest from rock climbing Dihedral wall, a multi pitch route on El Capitan in Yosemite National Park, California.

Rock climber Cassandra Riddle climbs out of the shadows while climbing at Carver, Oregon.

Male rock climber Adam Stack crimping and hanging out while climbing on a bouldering route in Red Rocks Conservation Area outside of Las Vegas, Nevada.

Tom McMillan blowing out a seam to place protection while making an ascent.

Two climbers dig out their tent after a snowstorm covered them in 14k camp on Mount McKinley, Alaska. Climbers are advised to spare no expense on a expedition-quality tent as it can mean the difference between life and death during a ferocious storm on Denali. Extra poles and repair materials are important in case of damage caused by storms. Plan to take extra pickets, wands or deadmen for tent anchors. Never leave a tent without anchoring it securely. Tents are lost each year due to sudden gusts of wind while the tent was left unattended or drying. Every climbing season High Mountain Rangers of the Denali National Park Service are called to help climbers in need. If possible the patient is brought down to base camp on foot, only in life threatening conditions a helicopter is called to evacuate the patient to a hospital in Anchorage.

An unidentified lead ice climber tops out on frozen waterfall by a popular climbing area called Haffner Creek in Kootenay National Park, British Columbia on December 1, 2002 as its snows, Canada

A mountain ranger is digging out tents after a snowstorm covered them during the night in 14k camp on Mount McKinley, Alaska. Climbers are advised to spare no expense on a expedition-quality tent as it can mean the difference between life and death during a ferocious storm on Denali. Extra poles and repair materials are important in case of damage caused by storms. Plan to take extra pickets, wands or deadmen for tent anchors. Never leave a tent without anchoring it securely. Tents are lost each year due to sudden gusts of wind while the tent was left unattended or drying. Every climbing season High Mountain Rangers of the Denali National Park Service are called to help climbers in need. If possible the patient is brought down to base camp on foot, only in life threatening conditions a helicopter is called to evacuate the patient to a hospital in Anchorage.

Hikers climb out of Surprise Valley to the North Rim of the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

A man checks out the climbing routes at the top of Basaseachic waterfalls in Chihuahua, Mexico

Female climber reaching out for a distant hold on overhanging limestone in China.

A man swings his ice tools as he climbs out of a moulin on a day trip with St. Elias Alpine Guides to the Root Glacier in Wrangell-St. Elias National Park, Alaska.

Fishermen prepare to set out in homemade rafts by climbing over the Malecon wall, Havana, Cuba

A woman swings her ice tools as she prepares to climb out of a moulin on a day trip with St. Elias Alpine Guides to the Root Glacier in Wrangell-St. Elias National Park, Alaska.

A female rock climber reaches out while on a boulder climb in Pemberton, British Columbia, Canada, Pemberton, British Columbia, Canada

Herd of Wildebeest (Connochaetes taurinus) crossing the Mara River and climbing out on the far bank in Serengeti National Park, Tanzania

Brown Bear (Ursus Arctos) Leaning Out Over Rocky Slope, Cabarceno, Cantabria, Spain

USA, New Mexico, Pecos, Woman in face mask climbing out of storage shelter at Pecos National Historical Park