The most biodiverse room in the world is carved into a mountain in an archipelago north of Scandinavia. It’s meters from one of the world’s most important satellite relay stations, and about 600 miles from the North Pole. 2,000 people inhabit the closest town.

The room is the Svalbard Global Seed Vault, and, this week, it turns six.

The Seed Vault, widely covered when it opened in 2008, has grown in the ensuing half-decade. Conceived as a “Fort Knox of Food,” the super-secure facility holds more than 800,000 seeds and specimens for food crops from around the world. Physically, it should be able withstand earthquakes, nuclear war, the ravages of climate change, and maybe even an asteroid collision.

The vault exists in a global network of regional seed vaults, and it’s part of a global effort to catalog and preserve the information of biodiversity as it decreases across the world. It’s also an exemplary piece of planning for the longest future foreseeable—for making as much knowledge available to our descendants.

“‘The first rule of intelligent tinkering is to save all the parts,’” said the vault’s executive director in a 2010 conversation with The Atlantic, paraphrasing Paul Ehrlich. “That's what we're trying to do.”

The vault has no permanent staff and opens only to receive seed deposits or visitors (like former President Jimmy Carter). It opened this week, though, and accepted the most recent 20,000 seeds. Here’s a sampling of what it accepted.