Ernest Shackleton led an expedition to cross Antarctica by foot via the South Pole in 1914. After setting sail from South Georgia Island in December 1914, his ship Endurance became trapped in ice in January 1915. The ship was eventually crushed by ice in October 1915, forcing Shackleton and his 27 crew members to camp on the ice. They launched lifeboats and reached Elephant Island in April 1916, where most of the crew remained while Shackleton and 5 others sailed to South Georgia for rescue. After a harrowing open boat journey, they arrived on South Georgia in May 1916. Shackleton then climbed over the island's mountains to reach a whaling station and organize a rescue, saving all crew members without any loss of life.