To avoid the worst of the storm, they swapped their planned route for a different one down the mountain. It was steep, and in order to descend they had to hang on to their ice axes, blades dug deep into the snow. Ken soon lost control and tumbled 800ft. But Muenchrath didn’t have the luxury of reacting. She had to focus on her own descent, trying to ignore her terror that she would find Ken’s broken body below.