Caves around Landkreis Gießen offer a diverse range of geological formations and historical sites. This region, situated in Hesse, features natural karst landscapes and former mining tunnels. The area is characterized by its geological history, including rift limestone formations and sinkholes. Visitors can explore various underground structures, from natural caves to man-made historical tunnels.
Last updated: June 25, 2026
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Popular around Landkreis Gießen
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Here you have a good view of the Dünsberg.
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🏗️ Tunnel History: From Railway Tunnel to Mushroom Farm The Freienseener Tunnel was completed in 1903 as part of the expansion of the Friedberg–Mücke railway line. The original tube was 146 meters long and formed part of the single-track connection between Laubach and Freienseen. In 1938/39, a second, 196-meter-long tube was built parallel to the first, but was never used for regular rail traffic. This second tube was used during World War II for a so-called "U-Verlagerung" (underground relocation) – an underground relocation of armaments production to camouflage it from air raids. From 1943 onwards, aircraft speedometers and parts for the V1 and V2 rockets were produced here, among other things. Approximately 1,200 forced laborers, prisoners of war, and inmates from a branch of the Heddernheim labor education camp were involved in this production. After the war, the tunnel was used for various civilian purposes. Today it houses a mushroom farm.
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drove past and found it beautiful
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The two railway tunnels near Freienseen bear witness to a turbulent history that goes far beyond rail traffic. One of the tunnels was once built for the planned railway line through the Vogelsberg Mountains – but trains never ran through it. The project remained unfinished. During World War II, the remote location was exploited: rocket parts, possibly also V1 and V2 components, were reportedly temporarily stored and guarded in surrounding bunkers. Today, the tunnels serve peaceful purposes: One tunnel houses a mushroom farm, the other is sealed and a protected refuge for bats. Therefore, it's clear: there will be no passage through them – whether on foot or by bike. Nature and current use are paramount. The railway line remains history. I was lucky on my railway line bike tour because, just as we were there, mushroom seeds and straw were delivered, and I was able to take a look inside. Great. YouTube Mushroom Farm Freienseen.
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Without knowing whether the caves were actually inhabited by prehistoric humans, my imagination runs wild: They must have been magnificent dwellings for that time, and I picture a large living room with stone shelves and a seating area, the walls painted green with hunting art. Then there's a terrace with a view, a children's room, etc. I could even imagine a thunder beam.
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A hole in the rock... to call this a shelter... well... but looking is ok
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Unfortunately there were no more drinks left. A cool non-alcoholic pilsner would have been just the thing! ;)
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The region offers a mix of natural karst formations and historical man-made tunnels. You can find natural caves like the Erdbacher Höhlen, which are part of a large karst system, or historical sites such as the Slate quarry near Königsberg, a former roofing slate mine.
Yes, the Stone Age Caves Treis are considered family-friendly and offer an interesting experience. For a more extensive and educational family outing, the Kubacher Kristallhöhle, Germany's only crystal show cave, is a highly recommended option within a short drive from Gießen.
The Erdbacher Höhlen are notable for being part of the largest Hessian karst cave system, showcasing rift limestone and karst sinkholes. Further afield, the Kubacher Kristallhöhle is unique with its sparkling crystals and stalactites, while the Herbstlabyrinth is recognized as the largest cave system in Hesse, offering deep insights into subterranean geology.
Landkreis Gießen has several historical sites. The Riedmann Ice Cellar was historically used for ice storage. The Slate quarry near Königsberg is a former roofing slate mine from the 19th century. Additionally, the Tiefer Stollen of Grube Silbersegen and the Mittelstollen Bat Habitat Entrance are historical mining tunnels.
Yes, the Steinkammern Breitscheid, located in the Westerwald region near Breitscheid, are known for interesting archaeological finds that have been discovered within them, providing a link to past human activity.
The Railway tunnel with mushroom cultivation and a World War II bat bunker and the Mittelstollen Bat Habitat Entrance are known bat habitats. The Old Riedmann Tunnel, while not publicly accessible, also serves as a protected refuge for bats. It's important to respect these sensitive ecosystems and any access restrictions.
Visitors appreciate the unique experiences offered by the caves. For instance, the Stone Age Caves Treis are noted for being very interesting, with some visitors even leaving messages in a guestbook inside. The historical context of sites like the Riedmann Ice Cellar also captures interest.
The natural areas around the caves are great for outdoor activities. You can find numerous hiking trails, including easy routes like the 'Vetzberg Castle Ruins – View of Gleiberg Castle loop'. For those interested in more active pursuits, there are also running trails and road cycling routes throughout Landkreis Gießen.
Some historical mining tunnels, such as the Mittelstollen Bat Habitat Entrance and the Old Riedmann Tunnel, are categorized as challenging. The Erdbacher Höhlen area, while natural, is undeveloped, and hiking there is at your own risk, suggesting a more rugged experience.
The Kubacher Kristallhöhle is Germany's only crystal show cave, located approximately 30.4 km from Gießen in Weilburg-Kubach. It features sparkling crystals, stalactites, and the largest cave hall in Germany, making it an impressive natural wonder.
The Herbstlabyrinth, recognized as the largest cave system in Hesse, is primarily a significant natural monument for serious speleologists due to its extensive nature. Public accessibility for general tours may be limited compared to dedicated show caves.
Public passage through the Old Riedmann Tunnel is generally not possible. One section is used for a mushroom farm, and another is sealed off as a protected bat refuge, highlighting its historical function and ecological importance.


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