BASE jumper Karina Hollekim risks an extreme jump at Hand of Fatima in the Malian desert, a stunning cliff formation in the Sahel region of West Africa which proves a daunting challenge.

South African kayaker and adventurer Steve Fisher plans one of his riskiest projects: navigating the narrow canyons of the Zambezi river below the Victoria Falls during an extreme high-water period.

Explorers: Adventures of the Century, has enlisted the world's most accomplished adventurers and explorers to share their stories in a series of stunning and at the same time biographical documentaries. Our film crews follow them across.

In search of a new challenge, Swiss mountain climber Ueli Steck gets into peak condition to break the speed-climbing record for the three most notorious northward faces in the Alps.

In 2011, Thomas and Alexander Huber with Mario Walder were the first climbers to attempt a redpoint team free ascent of Mount Asgard on Baffin Island, Canada.

Australian big wave surf legend Ross Clarke-Jones takes on the challenge of surfing one of the highest bores ever recorded.