Name is based upon its height above sea-level. Largely artificial, being formed from spoil removed from the adjacent railway cutting. It had strategic importance as it overlooked Ypres and so became the scene of fierce fighting after the Germans captured it in Dec 1914. Despite the terrible nature of the mixed soil, it became the scene of immense mining operations by both sides and was notorious for the terribly wet conditions underground. Five VCs were awarded here including that given to Cpl. Edward Dwyer in April 1915 when he was only 19 and hence the youngest man to have been awarded a VC at that time. The hill is regarded as a war grave site as many bodies were never recovered from the tunnels.