Slag Heap


Climb the slag heap on a fascinating expedition to discover this man-made mountain of mining waste, a reminder of the region’s industrial past that has now become a rich and diverse ecosystem.
Students observe, experiment and interpret this unique environment: the gradual colonisation by plants, the distinctive nature of the soil, and the relationships between living organisms and their surroundings.
Take a walk through this remarkable ecosystem, which has developed in just a few decades on a “pile of rocks” created by coal mining.

Outdoor activity on the slag heap. We recommend wearing suitable footwear and clothing for walking and the weather conditions.


Activities for the general public are offered only during school breaks in the Wallonia-Brussels Federation.

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