Explorer Ulla Lohmann, Climber Sebastian Hofmann and volcanologist Thomas Boyer attempt a 500m descent into the crater of the active Benbow volcano, one of only seven volcanoes in the world displaying an active lava lake.
Mitu Monteiro, a Cape Verdean kite surfer and multi-time world champion, attempts the solo crossing of the twelve volcanic islands of his native archipelago, taking on more than 730km only by man - powered means.
Ben Stookesberry, Chris Korbulic, Benny Marr and Pedro Oliva travel to Papua New Guinea to conquer whitewater that no kayakers have navigated before: The Beriman River Gorge - one of the most significant undertakings in a kayak.
"Onekotan" is a remote island with a collapsed volcano at its centre, off the coast of Kamchtachka, Russia. It is one of the most isolated places on earth. The weather is ferocious and unpredictable. The conditions are uninhabitable. For Matthias Haunholder, Phil Meier and Matthias Mayr it is the ultimate ski mountaineering expedition.
Set against the backdrop of breathtaking Patagonia, David Lama, climbing's wunderkind, sets out to climb the infamous south-east face of Cerro Torre, a Argentinian mountain once said to be the most difficult in the world.