Steve Backshall is visiting unexplored parts of the world. On this expedition, he attempts to summit an unclimbed mountain deep in Greenland’s Arctic wilderness. He faces many hazards - from rivers of freezing meltwater to quicksand and treacherous glacial ice. The Arctic is warming twice as fast as the rest of the planet which means Greenland’s ice sheet, over two kilometres thick in places, is melting. The climb lets Steve and his team look over an ancient habitat living on borrowed time.