Who was Nirmal Purja? The British-Nepali mountaineer who conquered all 14 highest peaks in record time

From serving in Britain's elite Special Boat Service to redefining the limits of high-altitude climbing with his record-breaking "Project Possible" expedition, Nirmal 'Nimsdai' Purja became one of the most influential mountaineers of his generation before his life was cut short in a tragic Broad Peak avalanche.