The Scandinavian country announced Monday that it is going to spend about $12.7 million to upgrade its “doomsday” seed vault that is the world’s largest repository built to safeguard against wars or natural disasters wiping out global food crops.

The Verge reported that the upgrades will focus on a new concrete tunnel and “emergency power and refrigerated units and other electrical equipment that emeits heat through the tunnel.”

The Svalbard Global Seed Vault, a gene bank built underground on the isolated island in a permafrost zone some 620 miles from the North Pole, was opened in 2008 as a master backup to the world’s other seed banks, in case their deposits are lost.

The latest specimens sent to the bank, located on the Svalbard archipelago between mainland Norway and the North Pole, included more than 15,000 reconstituted samples from an international research center that focuses on improving agriculture in dry zones. They were the first to retrieve seeds from the vault in 2015 before returning new ones after multiplying and reconstituting them. read more