A group of Czech climbers have set up an ice wall in the centre of Prague.
The wall was created by running water down the side of a rock cliff.
The 25m wall is used for climbing and is open 2-3 weeks every year.
One of the climbers Vaclav Balsanek said he and his friends came up with the idea when they noticed that there was a "natural spring that froze."
On learning that it was the property of the city, they cultivated it so locals could climb the wall.
"We just simply liked the idea that you can take a tram to an ice wall", Balsanek said.