A rare look inside the Svalbard Global Seed Vault—“the world’s most important freezer”—which is closed for about 350 days a year.

As explained by The Kid Should See This: “On the Norwegian island of Spitsbergen, the Svalbard Global Seed Vault protects around 865,000 seed samples from all over the world. Most of those seeds are of staple crops. ‘There are nearly 160,000 samples of wheat, and approaching 150,000 samples of rice.’”