For most of us, scaling the world's tallest mountains is just a pipe dream. It requires deft skill, in-depth knowledge of difficult terrain and no shortage of fearlessness; the smallest errors can lead to irreversible accidents. As a high mountain guide from Chamonix, Tristan Knoertzer knows this all too well. He works with the Chamonix mountain guide company and is the project manager of its 200th anniversary celebrations. He joined us for Perspective.
