Klemen Premrl always dreamed about climbing icebergs. Two of the most accomplished ice climbers in the world, Klemen and his partner and longtime friend Aljaz Anderle (both from Slovenia) along with a production crew from GoPro went to Greenland last summer to try and fulfill their childhood dream. While the iceberg summits they hoped to reach were generally much lower than their usual climbing objectives, the challenge was a substantial one. Nobody had ever climbed icebergs like these before, and since they’re floating in the middle of freezing cold glacier water with the majority of their mass submerged, they are extremely unpredictable. Prone to cracking, collapsing, and capsizing from the smallest disturbances, any time Klemen and Aljaz were on an iceberg their exposure was at a maximum. The consequences of mistakes, miscalculation, and bad luck were most likely going to be fatal. GoPro released the film of their expedition today, and it thoroughly blew our minds. The uncertainty of every swing of the ice axe is captured beautifully from a number of cool angles along with the uncertainty and moment-to-moment intensity of the razor thin edge they are constantly on while climbing the icebergs.