Tien Shan Mountains, Ala Archa Canyon, Kyrgyzstan, Central Asia

Tourist hiking the Colca Canyon trek, Peru, South America

Majestic red rock walls in Kok-Moinok Canyon, Kyrgyzstan, Central Asia, Asia

View above Red Wall Bridge crossing Roaring Springs Canyon, North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America

The upper leg of the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

Pedestrian suspension bridge leading through the gorge of Los Cahorros Monachil, Monachil, Sierra Nevada, Granada, Andalusia, Spain, Europe

Hiking trail in the arid gorge canyon landscape of Los Cahorros Monachil, Monachil, Sierra Nevada, Granada, Andalusia, Spain, Europe

Hiking trail and hikers in the Canon de Anisclo (Anisclo Canyon), Ordesa y Monte Perdido National Park, Aragon, Spain, Europe

Hikers return from Canyon base, Grand Canyon, UNESCO World Heritage Site, Arizona, United States of America, North America

Tourists on the rim of King's Canyon, Red Centre, Northern Territory, Australia

Hiking trail and hikers in the Canon de Anisclo (Anisclo Canyon), Ordesa y Monte Perdido National Park, Aragon, Spain, Europe

Mule trekking, Bryce Canyon National Park, Utah, United States of America (U.S.A.), North America

Mountain tour over the Brunnenauscharte to the Hochgrat on the Nagelfluhkette in the Allgau

Hiker enjoying panorama, Blyde River Canyon with summit Three Rondawels, view of canyon with river Blyde River and table mountains, canyon landscape, Panorama Route, Mpumalanga, South Africa

Hiker enjoying panorama, Blyde River Canyon with summit Three Rondawels, view of canyon with river Blyde River and table mountains, canyon landscape, Panorama Route, Mpumalanga, South Africa

Fantastic hike on the Grunten in the Allgau via the Burgberger Hornle and the Starzlachklamm near Sonthofen, Immenstadt

Hiker in the pavilion, the Moosalb stream in the forest in the Karlstal Gorge. Karlstal Gorge nature reserve, Karlstal, Palatinate Forest, Rhineland-Palatinate, Germany

Tourist wearing helmet and backpack hiking in vintgar gorge, near bled, slovenia, making thumbs up sign by the radovna river

Meteora in Greece

View of a viaduct and hikers on the Caminito del Rey path, embedded in a rocky gorge, Malaga, Spain, Europe

Man diving into La Salle Lake while hiking on a two-week trek of the Sierra High Route in the John Muir Wilderness in California. The 200-mile route roughly parallels the popular John Muir Trail through the Sierra Nevada Range of California from Kings Canyon National Park to Yosemite National Park.

Nepal, Upper Mustang, Rope Bridge, The bridge across the deep canyon near Ghyakar village.