This is the Antarctic explorer Sir Ernest Shackleton (1874-1922), watching the ice break up in the winter of 1915, just weeks before his exploration vessel The Endurance was crushed by the ice pack and sank below the Weddell Sea. I have cleaned-up and enhanced this old paget plate, which was taken in colour by the ship's photographer Frank Hurley 111 years ago. It's an early colour glass-plate process and not colourised.