In his 1953 autobiography, Danish explorer Peter Freuchen claimed that in 1926, he became trapped in a blizzard while running a dog team and was forced to take shelter under his sled for 30 hours while snow built up and froze around him. When he tried to emerge, he found he was entombed in ice and unable to break free with his hands alone. Thinking quickly, he took a shit right there, shaped the turd into a chisel, and allowed it to freeze solid. He then claims he was able to use his newly made tool to chip his way free and make it back to camp. Peter was the only witness to his supposed escape. The study mentions it's based on an Inuit ethnographic account, however. Maybe Peter, having spent much time in the Arctic with Inuit peoples simply took the story for himself. With the runners of the study finding that they were unable to replicate such a technique, it lends credibility to the claim that story may have been fabricated.