The Valkenburg Caves are a network 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 by water. They are known for their unique geological formations and historical significance, having been used for various purposes, including as a refuge during World War II. Visitors to the Valkenburg Caves can explore guided tours that showcase the caves' fascinating history and stunning rock formations. The caves also feature ancient carvings and remnants of mining activities, providing insight into the region's past. The site is a popular tourist attraction, drawing visitors interested in geology and history.