After more than 100 years hidden in the icy waters of Antarctica, Sir Ernest Shackleton’s ship Endurance has been revealed in extraordinary 3D detail.
For the first time we can see the vessel, which sank in 1915 and lies 3,000m down at the bottom of the Weddell Sea, as if the murky water has been drained away.
The flare gun was fired by Frank Hurley, the expedition's photographer, as the ship that had been the crew’s home was lost to the ice.
“Hurley gets this flare gun, and he fires the flare gun into the air with a massive detonator as a tribute to the ship,” explains Dr John Shears who led the expedition that found Endurance.
"And then in the diary, he talks about putting it down on the deck. And there we are. We come back over 100 years later, and there's that flare gun, incredible.”
Sir Ernest Shackleton was an Anglo-Irish explorer who led the Imperial Trans-Antarctic Expedition, which set out to make the first land crossing of Antarctica.