Karl Bushby knew it would be a difficult journey when he decided to walk across the sea from Alaska to Siberia. 95 kilometres of Arctic sea separate America from Russia: these are the Bering Straits. In winter they are frozen: in theory, it is possible to cross on foot. Possible, but still very dangerous- there are no maps, no paths and no certainties. Every year is different. The ice can be very treacherous, and the shortest route is never the safest. Local people from Alaska, and from Siberia,...
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