Explain the Endurance Shackleton's legendary Antarctic expedition.

Sir Ernest Shackleton's Imperial Trans-Antarctic
Expedition of 1914 established a goal which no explorer had yet completed: a crossing of
the continent from Atlantic to Pacific Oceans. Shackleton's audacious plan was to take
two ships, Endurance and the Aurora, with one
distributing supplies at various stops while Shackleton's men made the 1800 mile trek
across Antarctica. However, Shackleton's ship, Endurance, became
frozen in the ice, and the men were forced to wait for a spring thaw in order to
continue. However, Endurance eventually took on water and sank,
leaving Shackleton's party to survive on an ice floe with minimal supplies. The rest of
the journey became an incredible ordeal of survival against the elements and,
incredibly, Shackleton's own group was eventually rescued without the loss of a single
man. (Three men died on the Aurora, however, including the ship's
captain.) The expedition's crew was finally rescued in August 1916--nearly two years
after it began.