Will Gadd and Tim Emmett discover the holy grail of ice climbing, Helmcken Falls, Canada where a cave features hundreds of feet of overhanging, barely climbable ice.
A Swiss expedition up a wild mountain.
Speed alpinist Ueli Steck dances up faces in the Himalaya and the Alps, including his record-smashing ascent of The Eiger North Face. Ueli also teams up with fellow soloist Alex Honnold to break records on El Capitan.
