## The Unfinished Crossing
It is worth noting, finally and explicitly, what the Imperial Trans-Antarctic Expedition did not do.
It did not cross Antarctica. The route Shackleton had planned — from the Weddell Sea coast through the South Pole and down to the Ross Ice Shelf, a distance of approximately 1,800 miles — was never attempted. The ship that was supposed to carry him to his starting point was crushed before he reached the continent.
The food depots that the Ross Sea party laid, at the cost of enormous effort and three lives, were never used. They sit somewhere on the Ross Ice Shelf, or have been covered by subsequent snowfall, or have drifted with the slow movement of the glacier — the specific locations recorded in the depot logs, depots that were prepared for a man who never came.
The crossing was not completed until 1958, when Vivian Fuchs and Edmund Hillary led the Commonwealth Trans-Antarctic Expedition across the continent using motorized vehicles that Shackleton could not have imagined in 1914. The first crossing was oversnow traverse, supported by aircraft and radio, in conditions of preparation that the Imperial Trans-Antarctic Expedition could not have matched with the technology of its era.
Shackleton’s failure to cross Antarctica is, paradoxically, what gave the expedition its lasting significance. If the crossing had succeeded, the Imperial Trans-Antarctic Expedition would be remembered as an achievement — a footnote in the history of Antarctic exploration, significant but not extraordinary. The crossing failed, the ship was lost, and the survival that followed was extraordinary in a way that successful expeditions rarely are.