Rock climber tackles a very overhanging route on the famous limestone cliffs of the Gorge du Tarn in the Massif Central, near Millau and Rodez, south west France, Europe

Two rock climbers making their way up a very difficult route on the 450 metre monolith of Karimbony, Tsaranoro Massif, Andringitra National Park, Southern Madagascar, Africa

Hiker on path along levada (aqueduct) of Green Cauldron (Caldeirao Verde), Madeira island, Atlantic Ocean, Portugal

Track (Al Barida Road) on western slope of Djebel Ahkdar from Sharaf al Alamayn Pass, 2036m, to Bilad Sayt and Rustaq road, Oman, Arabian Peninsula

Four-wheel drive crossing a river ford between Ouarzazate and Ait Ben Haddou, Ounila River valley, Ouarzazate Province, Draa-Tafilalet region, Morocco

A rock climber tackles a very difficult route on the steep walls of Gordale Scar, a famous limestone ravine near Malham Cove, North Yorkshire, England, United Kingdom, Europe

Trail runner near Balnakeil Bay, Sutherland, Highlands, Scotland, United Kingdom

Cerro Torre, one of the hardest peaks in the world to climb, El Chalten Massif, Argentine Patagonia, Argentina, South America

A climber tackles a steep and challenging route on the cliffs of the Aveyron Gorge, Aveyron region, Massif Central, France

A young man climbs a challenging cliff route, secured by a rope, showcasing strength and determination against the rugged rock face under a clear sky, capturing the thrill and intensity of the ascent

Martin Avidan takes a break to phone home from a ledge on Zodiac, a 16 pitch 5.11 A3+ route on El Capitan in Yosemite National Park, California.

Bob Porter aid climbing up Zodiac, a 16 pitch 5.11 A3+, route on El Capitan in Yosemite National Park, California.

Eric Chabala looks for foot placement on an overhanging bouldering route. Eric is on a bouldering expedition in Patagonia, outside of El Chalten, Argentina. Fitz Roy Peak is in the background.

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.

Bob Porter places a cam on Zodiac, a 16 pitch 5.11 A3+, route on El Capitan in Yosemite National Park, California.

Rock climber Tommy Caldwell jams his hands into a crack on while lead climbing the the West Buttress climbing route of El Cap in Yosemite Valley, California.Tommy Caldwell is one of the world's leading big wall rock climbers.

Beth Rodden belays her husband, big wall climber Tommy Caldwell, from a portalege as Caldwell is rock climbing Dihedral wall, a multi pitch route on El Capitan in Yosemite National Park, California.

Justin Bastien lead climbs an overhanging 5.11 climbing route at the Vedauwoo climbing area in Medicine Bow National Forest, Wyoming. Vedauwoo is believed to mean "Land of the Earthborn Spirits" in Arapahoe.

Katie Brown sucks it up as she nears the top of an overhanging bouldering route. Katie Brown, one of the world's leading sport climbers and the first woman to flash a 5.14a sport route, is bouldering near the Hampi, ruins outside of Hampi, India.

Big wall climber Tommy Caldwell rock climbing Dihedral wall, a multi pitch route on El Capitan in Yosemite National Park, California.

Rock climber Kelly Doyle climbing an overhanging bouldering route in the Buttermilks, outside of Bishop, California in the Sierra Nevada mountains near Hwy 395.

Bob Porter uses his Funkness device while aid climbing up Zodiac, a 16 pitch 5.11 A3+ route on El Capitan in Yosemite National Park, California.

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.

Rock climber Hallie Lee crimping while climbing on a slightly overhanging bouldering route in the Buttermilks, outside of Bishop, California, off Hwy 395.

Male rock climber Tommy Caldwell climbing an overhanging route at the Red Rock Conservation Area in Nevada. Tommy is one of the greatest big wall climbers in the world.

Tommy Caldwell belays female rock climber Beth Rodden as she climbs a crack on the West Buttress climbing route on El Capitan in Yosemite National Park, California. Beth Rodden and Tommy Caldwelll are two of the world's leading big wall climbers.

Justin Bastien places a cam in a crack on a 5.12 climbing route in the Vedauwoo climbing area in Medicine Bow National Forest, Wyoming. Vedauwoo is believed to mean "Land of the Earthborn Spirits" in Arapahoe.

Bob Porter aid climbs Zodiac, a 16 pitch 5.11 A3+, route on El Capitan in Yosemite National Park, California.

Bob Porter adjusts his wall hauler, a pully used to haul gear up a wall. Bob Porter is climbing Zodiac, a 16 pitch 5.11 A3+ route, in Yosemite National Park, California.

Bob Porter makes his way up Zodiac, a 16 pitch 5.11 A3+ route on El Capitan in Yosemite National Park, California.