Mountaineer Dani Arnold explores deepest lake on earth | Lake Baikal - too cold to climb?

Mammut Pro athlet Dani Arnold embarks on an expedition to a place so extreme, few athletes have dared to explore it. An adventure to Lake Baikal, the deepest lake on earth, with temperatures as low as -40°C. Too cold to climb? See how he transitions to the horizontal ice and conquers ten new ice routes. Discover the full experience and the whole new Mammut Eiger Extreme collection :