The Valkenburg caves are a series of limestone caves located in Valkenburg aan de Geul, a town in the Netherlands. These caves were formed over thousands of years through the erosion of limestone, creating a complex network of tunnels and chambers. They are known for their unique geological formations and historical significance, having been used for various purposes, including as a refuge during wars. Visitors to the Valkenburg caves can explore guided tours that showcase the fascinating history and natural beauty of the area. The caves also feature ancient carvings and remnants of past human activity, making them an important site for both tourism and archaeology.