Dean Regis here, astronomer and host of Looking Up.

I journey to the far reaches of the universe, hearing from scientists, astronauts, and geeky celebs along the way.

We cover everything from black holes to the latest in science fiction.

Listen now to the Looking Up podcast from the NPR Network and Cincinnati Public Radio.

You're listening to Shortwave from NPR.

Hi, shortwavers.

Emily Kwong here with science reporter Ari Daniel.

Hey, Ari.

Hi, Emily.

I hear you are taking us on a trip to Colorado for this story.

You have heard correctly to a special place just outside the bustling town of Manitou Springs

to a spot called Iron Spring.

It's one of the places where you can actually hear the Earth's inner rumblings burble to the surface

as spring water.

At this particular well, every few seconds, a burst of mineral water surges out of a narrow

pipe splashing into a concrete basin.

Oh, so it's like an old-timey water fountain made by nature.

Yeah, that's a good way to think of it, Emily.

There are people who do drink this water,

but it's something of an acquired taste.

It tastes like iron. If you're a vampire, you'd be a fan.

This is Doug Edmondson. He heads the Mineral Springs Foundation. When we meet up for this story,

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