On November 21, 1914, after sailing more than ten thousand miles from Norway to the Antarctic Ocean, the Endurance finally succumbed to the surrounding ice. Ernest Shackleton and his crew had navigated the 144-foot, three-masted wooden vessel to Antarctica to become the first to cross the barren continent, but early season pack ice trapped them in place offshore. They watched in silence as the ship disappeared into the frigid sea, then spent six harrowing months marooned on the ice in its wake. As this legendary story entered the annals of polar exploration, it inspired a new global race to find the wrecked Endurance, by all accounts “the world’s most unreachable shipwreck.” Several missions failed, thwarted, as Shackleton was, by the unpredictable Weddell Sea. Finally, a century to the day after Shackleton’s death, renowned marine archeologist Mensun Bound and an elite team of explorers discovered the lost shipwreck.