Cette promenade vous montrera comment l’eau et le calcaire ont façonné les paysages pittoresques d’Onoz et de Spy. La riche histoire de Jemeppe-sur-Sambre est illustrée par les réserves naturelles et exploitée par les peuples depuis la préhistoire. L’infiltration d’eau dans le calcaire est responsable de la formation des grottes et aussi de la grotte de l’homme de Spy, il y a 30 000 ans.
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