Mark Synnott is a professional rock climber and author. He’s climb many first ascents, written a multitude of National Geographic articles and simply put had a ton of bad ass adventures. He took up sailing about 20 years ago, and recently sailed his boat, Polar Sun, through the Northwest Passage on a quest to unlock the mystery surrounding the disappearance of the Franklin Expedition. Mark has a new book about the adventure called Into The Ice. National Geographic also produced a special about his journey called Lost in the Arctic that you can watch on Disney+.