Schlossberghohlen, Red sandstone cave system in Homburg, Germany.

The Schlossberghohlen are a red sandstone cave system located beneath the Schlossberg hill in Homburg, Germany. The tunnels run about 140 meters long and 60 meters wide, forming a network of passageways and chambers carved directly into the rock.

The caves were formed from the 17th century onward as workers quarried quartz sandstone from the hillside for local construction and industry. After mining stopped, the tunnels were forgotten for a long period before being rediscovered.

The name comes from the Schlossberg, the hill beneath which the tunnels were carved. Walking through the passageways, visitors can see how the rock was worked by hand over generations, leaving clear marks in the red sandstone walls.

The temperature inside stays low throughout the year, so bringing a warm layer is a good idea even in summer. The ground is uneven in places and can be slippery, so wear sturdy shoes before heading in.

During World War II, the caves were used as a shelter from air raids, and fixed structures were built inside to protect the local population. Some of these wartime additions are still visible today, giving the visit an unexpected layer of history.

• Location: Homburg
• Length: 140 m
• Width: 60 m
• Address: Schlossberg-Höhen-Straße
• GPS coordinates: 49.32110,7.34333
• Latest update: March 3, 2026 08:18