Like most of the wetlands in the Haine valley, the Harchies-Hensies-Pommeroeul marshes were formed in subsidence caused by mining. The depressions were formed in the mid-1920s and immediately filled with …
As you walk through the Raismes-Saint-Amand-Wallers Forest, you will come across many small, unnamed ponds that reflect the trees and the sky in winter and are covered in algae in summer.