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Whatever you do, don't look down.
Cliff camping.
Skywalking in the Alps.
Photo by Josef Stuefer
Portaledge camping at Yosemite.
Climbing Redwoods.
Sitting on the Trolltunga rock in Norway.
Jumping on the Trolltunga rock in Norway.
Photo by Opple Voodda.
British climber John Roberts in South Africa.
Ice climbing a frozen waterfall.
Extreme picnicking.
On the Kjeragbolten boulder in Norway.
Photos via Nilsenbilder and Simon Taylor
Extreme skiing at Grand Targhee, Wyoming.
Skywalking on Mount Nimbus in Canada.
Photo by CMH Summer Adventures.
Tree camping in Germany.
Vintage climbing photo taken from Gaston Rébuffat's book.
Extreme kayaking at Victoria Falls.
Blake Aldridge dives 29 meters from the rock monolith during the Red Bull Cliff Diving World Series in Portugal.
Climbing Mt. Wellington.
Photo by S. Karpiniec/Creative Commons.
On the Edgewalk in Toronto. (Courtesy of CN Tower.)
A death-defying act by Eskil Rønningsbakken in Norway.
How mountain climbers sleep.
Alex Honnold at Yosemite.
Shot taken from a documentary entitled Alone on the Wall about Honnold's adventures.
Now imagine if you dropped your phone down there.
Photo by Copaintok74/Creative Commons.
Base jumping in Yosemite.
Glacierboarding.
Trapeze paragliding.
Hanging out at the Sky Walk in Macau.
Photo by toon_ee
A ride at the Stratosphere Tower in Las Vegas.
In Ft. Tryon park.
By Jordan Matters, from the book Dancers Among Us.
Dinner in the sky in Brussels.
Bike trail on the Cliffs of Moher, via Hans Rey.
Driving down a sand dune in Lucky Bay, Australia.