I'm standing at the top of a mountain in northern Sweden.

And I'm looking at a ring in the rock.

It's polished down into the stone, almost like hundreds of feet did hundreds of laps

around this circle and pounded the ground until it became smooth.

According to a famous Swedish legend, that is exactly what happened.

A group of doomed teenagers followed the devil to the top of this mountain and as they

danced circle after circle and wore their bones down against the rock, the devil sat

in a nearby tree, watching them dance to their deaths and playing his violin.

I'm Sarah Wyman and this is Atlas Obscura, a celebration of the world's strange, incredible

and wondrous places.

Today I climb hold a dead body at the mountain in Sweden to hear the devil's violin.

Okay, so we are in Helsingland in Sweden.

That's Emilito Sien, she's a friend of mine and a reporter for Swedish radio.

We're in the car in northern Sweden with a local folk musician.

His name is banked Jonsson.

He's played violin for 60 years and also we recently found out he's one of only a few Swedish

musicians who know how to play the cow horn.

That's the instrument you heard just a second ago.

Anyway, this guy is old school.

The three of us are on our way to a place called Horde Gabbariat, I'll break that down

for you.

Horde Gabb is the name of a town, Bariat means mountain, so Horde Gabbariat is the mountain

...