Underground Wonders

Valkenburg's landscape is defined by its extensive network of marlstone quarries and subterranean sites. This collection includes the Gemeentegrot, a former quarry featuring charcoal drawings and sculptures, and the Modelsteenkoolmijn, which demonstrates Dutch mining history. Visitors can explore religious heritage at the Lourdesgrot on the Cauberg or view replicas of early Christian burial sites at the Roman Catacombs. The list also highlights archaeological remains of Roman villas and the vast tunnels of the Sibbergroeve.