Rock climbing, free climbing on Black Crag, in the Lake District National Park, Cumbria, UK

Young woman hiking, climb to Plumsjoch in the Karwendel Mountains, Rissbachtal, Tyrol, Austria, Europe

Cross-country skiers during the ascent to Seeberspitz Mountain in the Pflersch Valley above Innerpflersch, Alto Adige, Italy, Europe

Climbers ascending Mt. Marmolada, Dolomites, Westgrat fixed rope route, Mt. Marmolada in the back, Trentino, Italy, Europe

Snow shoe hikers during ascent to Mt Hoertlahner above Durnholz, Sarntal valley, Mt Hoertlahner at back, South Tyrol, Italy, Europe

Mountaineers climbing Vertainspitze mountain, Ortler Alps, province of Bolzano-Bozen, Italy, Europe

Mt. Croda dei Toni (or Mt. Zwoelferkofel), Dolomites, Bolzano-Bozen (South Tirol), Italy, Europe

Viennese climber Geri Winkler on a ladder overcoming a crevasse of Khumbu Icefall, ca.5600 m, Mount Everest, Himalaya, Nepal

Panoramic view of the Karwendel Range by full moon, sea of fog, view of the Stubai Alps, Upper Bavaria, Bavaria, Germany, Europe

Panoramic view of the Karwendel Range in sea of fog, view of Mieminger Chain and Stubai Alps, Upper Bavaria, Bavaria, Germany, Europe

Mountaineer and local guide at the ascent to the summit of the Kilimanjaro via the Western Breach route, Tanzania, Africa

Hikers climbing Mt Marmolata, fixed rope route on west ridge, Dolomites mountain range, Italy, Europe

Australia Safari Rally 2007, start, Enduro motorcycle, outback, Western Australia, WA, Australia

People climbing Uluru, Ayers Rock, Uluru National Park, Northern Territory, Australia

Panoramic view of the Karwendel Range in sea of fog, view of Mieminger Chain, Upper Bavaria, Bavaria, Germany, Europe

Mountaineering group on Weissseeferner Glacier, Kaunertal, Oetztal Alps, Tyrol, Austria, Europe

Fermedatuerme and Sass Rigais peaks, Geislergruppe Range, Groednertal Valley, Dolomites, South Tirol, Italy, Europe

Mountain climber passing through Pfitschertal Valley while ascending Hochfeiler Mountain, Alto Adige, Italy, Europe

Mountaineers taking a break on the summit of Uribrutto mountain above Passo Valles, Dolomites, Palla group and Passo Rolle mountain at the back, province of Trento, Italy, Europe

Silhouettes of two hikers, hiking tour in the evening, Styria, Austria, Europe

Yellow tents, alpinists and equipment in Camp IV, 4, on South Col, 7950m, Mount Everest, Himalaya, Nepal

Ice pick with rope team on glacier, Chur, Canton Grisons, Switzerland, Europe

Ascent to Morgenrast Mountain from Unterreinswald, Sarntal Valley, Alto Adige, Italy, Europe

Old mountain hiking shoe and horseshoes, Draugsteinalm (Draugstein mountain pasture), Grossarltal (Grossarl Valley), Salzburg, Austria, Europe

Hikers carrying backpacks crossing a snowy valley along the Chilkoot Trail, British Columbia, Canada, North America

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

Serpentines on the ascent to Thame, Khumbu, Sagarmatha National Park, Nepal, Asia

Mountaineers on their way from Muellerhuette mountain lodge to Wilder Pfaff mountain and Zuckerhuetl mountain, Muellerhuette mountain lodge at the back, Passeier Valley above Timmelsjochstrasse road, province of Bolzano-Bozen, Italy, Europe

Climbers during the ascent to Piz Palue Mountain on the Pers Glacier, looking towards Piz Palue Mountain, with Bellavista on the left, Grisons, Switzerland, Europe

Tourist group hiking to the crater of Mt Stromboli, volcanic island of Stromboli, Aeolian Islands or Lipari Islands, Sicily, Southern Italy, Italy, Europe

Hikers in a rocky passage on the way to the Cabane de Prarochet or Prarochet Huette alpine shelter, Valais, Switzerland, Europe