After eight days of wiping sweat off my brows, I finally reached Concordia, a bleak collection of tents in the Karakoram. I was hoping for a life-defining view of K2, the remote, savage, second highest peak on the planet. Instead I encountered an uncaring, enveloping cloud and a frosty wind. The rocks on the glacier were too cold to sit on, but neither our porters nor our tents were visible. So, with the crack and rumble from avalanches on 8,000m peaks hidden by clouds, I waited.


