Caves in Mainz-Bingen offer a diverse range of underground experiences within the Rhineland-Palatinate region of Germany. The district is characterized by its position along the Rhine River, featuring historical towns and a landscape shaped by both natural geological processes and human activity. This area includes both natural rock formations and significant man-made underground structures, reflecting centuries of local history and industry. Visitors can explore sites ranging from small natural fissures to extensive historical mining tunnels and cellar systems.
Last updated: June 27, 2026
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The Oppenheim cellar labyrinth is worth seeing. The labyrinth can only be visited as part of a guided tour. Tickets can be booked at www.stadt-oppenheim.de/buchen.
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You can book a guided tour at https://www.stadt-oppenheim.de/buchen/. Highly recommended.
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In 1986, a police car crashed into a street after a burst water pipe had washed out the road. This led to the rediscovery of the cellar labyrinth, which presumably stretches over 40 km. The city faced a problem because the city's structural stability was at risk. The investigation revealed that the passageways and cellars had been completely filled—partly with waste—or were still owned by private individuals. However, it was decided to preserve a 500 m labyrinth and open it to the public. Since no historical records exist regarding the cellar labyrinth, nothing is known about its use. Presumably, other goods were stored in the cellars besides wine. Small niches in the walls indicate that these were markers for the ownership of the warehouses. The cellar labyrinth consists of seven levels that were dug horizontally into the mountain and connected to each other. The cellar vaults belonged to the first person to excavate the space, regardless of which house it was located under. Tickets for the tour can be purchased online: https://www.rheinhessen.de/a-oppenheimer-kellerlabyrinth
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The tour lasts about an hour and is definitely worth it. The whole thing is very interesting, and you learn a lot about the history of the area and the city.
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The Rhine and its tributaries have cut deep valleys into the high plateau of the Hunsrück in the Bacharach area, on the slopes of which slate occurs, which was used in construction and especially for roofing. You are standing here in front of an old slate tunnel.
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On the serpentine path (World Heritage Trail) to the Traumschleifchen there is a small shelter
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Spectacular insight into slate mining
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Mainz-Bingen offers a mix of natural rock formations and significant man-made underground structures. You can explore historical mining tunnels like the Steeg Slate Mine, extensive cellar systems such as the Oppenheim Cellar Labyrinth, and small natural rock shelters like the Small Cave Entrance.
Yes, for historical sites like the Oppenheim Cellar Labyrinth, guided tours are available. These tours are highly recommended to learn about the 'city under the city' and its history as a hiding place and camp during wartime. For other sites, exploration might be self-guided.
The Oppenheim Cellar Labyrinth has varying opening hours: from March to October, it's open Monday to Saturday from 10 a.m. to 5 p.m., and Sundays from 10 a.m. to 4 p.m. From November to February, it's open Monday to Friday from 10 a.m. to 5 p.m., and Saturdays from 11 a.m. to 2 p.m., remaining closed on Sundays. Tickets for guided tours can be booked at the Tourist Info next to the town hall.
The Oppenheim Cellar Labyrinth is generally considered family-friendly, offering an engaging historical experience. For natural caves, sites like the Small Cave Entrance offer a brief, accessible experience. However, some mining tunnels, such as the Steeg Slate Mine, can be partially water-filled and might be more challenging for very young children.
For sites like the Steeg Slate Mine, where tunnels can be partially water-filled, waterproof footwear is advisable. Generally, comfortable clothing suitable for cooler, damp conditions and a reliable flashlight (even your phone's flashlight can help) are recommended for exploring darker sections.
Yes, in the broader region, you can find sites like the Mainzer Unterwelten (Mainz Underworlds) at Fort Josef, which offers tours of historical military underground structures. Further afield in the Hunsrück region, the small Schinderhannes Cave is notable for its historical association with the legendary robber Schinderhannes.
The region features caves formed in shale rock, often due to tectonic forces creating fissures. In the Steeg Slate Mine, you can observe machining marks from past mining operations, showcasing the industrial history intertwined with the geology. Other sites like the Old quarry and gallery also reveal insights into local rock formations and mining techniques.
Mainz-Bingen offers various outdoor activities. You can find excellent hiking trails, such as the Hiwweltour Bismarckturm or Hiwweltour Westerberg. For cyclists, there are numerous gravel biking routes like the Vineyard Path in Rhenish Hesse. Running trails are also popular, including those in the Lenneberg Nature Playground area.
Beyond the more popular sites, you can explore places like the Mönchholzkopf Slate Mine, where the tunnel is barred for bats but you can still see remains of buildings and tools in the quarry. Another interesting spot is the Water tunnel, offering a different kind of underground exploration.
Many underground sites, especially historical ones like the Oppenheim Cellar Labyrinth, are accessible year-round, with specific opening hours for different seasons. The cool temperatures underground can be particularly refreshing on hot summer days. For natural caves, accessibility might depend on weather conditions, but generally, they can be visited throughout the year.
For guided tours of sites like the Oppenheim Cellar Labyrinth, you will need to purchase a ticket. For smaller, natural cave entrances or old mining tunnels that are publicly accessible, a permit is typically not required, but always respect any signage regarding access restrictions, especially for protected areas or bat habitats like the Mönchholzkopf Slate Mine.
While many natural caves and older mining tunnels in the region may have uneven terrain or require some agility, the Oppenheim Cellar Labyrinth, being a structured historical site with guided tours, might offer more accessible sections. It's best to inquire directly with the tour operators about specific accessibility options for visitors with mobility challenges.


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