This is 99% invisible. I'm Roman Mars.

In the Arctic Ocean there's a cluster of islands called Svalbard.

The islands are technically part of Norway, but they're much farther north than the mainland.

Like way, way up toward the North Pole.

The landscape is icy and mountainous, and on one of the icy mountains of Svalbard is a very curious thing.

A vault.

The entrance to the vault itself is small but striking.

It's like a man-made obelisk sticking out of a glacier on top of a mountain.

Yes, the vault itself is inside a mountain.

That's Ben Brock Johnson from the podcast Endless Thread, a show in which Ben and his co-host Amory Siebertsin tell stories that they find on Reddit.

This week we're featuring one of those stories, so I'm going to hand this one off to Ben and Amory.

This story has actually been posted a few times by different redditors, but it's about people who aren't necessarily redditors.

Aga, Marie Haga.

Do you think Marie Haga is a redditor Ben?

I don't know, but she definitely knows how to talk to interviewers.

Do you want very short answers, medium answers?

Marie Haga is a former Norwegian diplomat.

She was a member of Parliament in that country, former Minister of Energy.

Her current job is to manage one of the world's most important vaults, maybe the most important vault in the world.

Let me take you on a little tour.

All right, Marie.

Lead us into this glacier mountain.

...