Cave beneath Predjama Castle

Beneath the dramatic limestone cliff that supports Predjama Castle lies a fascinating cave system, offering visitors a unique glimpse into both natural wonders and medieval history. The cave beneath Predjama Castle is the second longest in Slovenia and forms an integral part of the castle’s story. Historically, these underground passages served as secret escape routes and supply lines for the castle’s most famous resident, the 15th-century knight Erasmus of Lueg. During a siege, Erasmus is said to have used the network of tunnels to outwit his enemies, receiving food and supplies while remaining hidden within the fortress.

Today, visitors can explore sections of this extensive cave network through guided tours, which reveal impressive chambers, stalactites, and the cool, echoing atmosphere of the underground world. The tours often highlight the connection between the castle and the cave, showcasing how the natural landscape was ingeniously incorporated into the castle’s defenses. Adventure seekers can also participate in more challenging cave experiences, venturing deeper into the system.

The cave is accessible year-round, regardless of weather, and provides a refreshing contrast to the castle’s medieval interiors. Exploring the cave beneath Predjama Castle offers a memorable combination of geology, history, and legend, making it a must-see for anyone visiting the Postojna region.