Route Marking and Depot Laying
During the depot laying in February 1911, Roald Amundsen had his first (and last) 180 miles of his route marked like a Norwegian ski course using marker flags initially every eight miles. He added to this by using parts of empty food containers that had been prepared by painting the outside black resulting in a marker every mile. From 82 degrees on Amundsen built a 6 ft cairn every three miles with a note inside recording the cairn's position, the distance to the next depot, and direction to the next cairn. In order not to miss a depot considering the snow and great distances, Amundsen took precautions. Each depot laid out up to 85 degrees (laid out every degree of latitude) had a line of bamboo flags laid out transversely every half mile for 5 miles either side of the depot.
Scott relied on depots much less frequently laid out. For one distance where Amundsen laid seven depots, Scott laid only two. Routes were marked by the walls made at lunch and evening stops to protect the ponies. Depots had a single flag.
As a result Scott has much concern recorded in his diaries over route finding, and experienced close calls about finding depots. It is also clear that Scott's team did not travel on a number of days, because the swirling snow hid their three month old outward tracks. With better depot and route marking they would have been able to travel on more days with a following wind which would have filled the sail attached to their sledge, and so travel further, and may have reached safety.
Read more about this topic: Comparison Of The Amundsen And Scott Expeditions
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