The Svarlbard Seed Valt - sometimes better known as the Doomsday Vault - is located on the island of Spitsbergen, Norway. Its mission is to hold ‘spare’ samples  and exact copies of plant seeds held in genebanks worldwide, to provide a safety net against accidental loss of diversity. The building is drilled 120 metres (390 ft) into the side of a mountain, far away from civilization to avoid global crisis, natural disasters, and has a door built to survive nuclear warfare.