“This wasn’t the first time that Martin had attempted this audacious trip. In 2011, he planned to walk to China by crossing the partially frozen Bering Sea — no easy feat, because of the need to hopscotch over fast-moving pack ice. Aside from the Siberian Yupik people who were the first to cross the Bering land bridge at the end of the last Ice Age, less than half a dozen teams have made it across on foot. German Max Gottschalk was the first documented person to cross the strait, by dogsled rather than by boat, in March 1913, from Siberia to Shishmaref, Alaska.”