"It's a beautiful mountain of schist, don't you tink ?"

"I like this black, fragile clay stone. Feel how it crumbles between your fingers. When you think it is 300 million years old ...

I thought nothing could ever grow on this, but even at to the north, you can already see a few birch trees.

Those would grow anywhere, it's insane and nothing can stop them ! They even manage to grow on a slag heap, curbing their trunks to adapt to the slope ..."

The visit will absolutely changed you view of nature and the role that our slag heaps now play in it.

Hours : from 10.00 a.m till 17.00 p.m.

- week-ends and public holidays from 14/02 till 28/11/10;

- during the week from 05/04 till 10/09/10.