The Mallory's Climb expansion adds a much more difficult route to the summit of Mount Everest. Restricted by regional politics, the ill-fated 1924 British Mount Everest Expedition was forced to use the much more dangerous northern approach. This path held all the usual challenges but added a few particularly challenging obstacles, such as the formidable Second Step. The team that attempted this did so with crude technology, unreliable oxygen tanks, simple climbing gear, and iron resolve...