Best caves around Kolverath are found in the Vulkaneifel region, an area known for its volcanic landscape and unique geological formations. The caves here are primarily artificial, created by centuries of millstone and slate mining. These sites offer insight into the region's industrial past and the human endeavor to utilize its resources. Visitors can explore various mine tunnels and historical sites that reveal the geological history of the Eifel.
Last updated: June 27, 2026
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1 million years of geology. Worth putting your bike aside for a moment.
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surprising sight when walking the theme path in our direction
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The Ulmener Maar tunnel connects the Ulmener Maar with the Jungferweiher Maar and is 120 meters long and 70 cm wide at its narrowest point. Different rock layers from the volcanic history can be seen. Display boards and paintings on the tunnel make the history very interesting. The tunnel was used to channel water from the two maars into the Ulmener Bach to the mills. Next to the tunnel, two drains and bulkheads are used to regulate the water level.
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Information about the Maar Stollen can be found, for example, at https://www.gesundland-vulkaneifel.de/ulmener-maar-stollen-entdecker-tour/#:~:text=Ulmen%20neu%20erleben&text=Den%20Maar%2DStollen%20kannst %20you, just%20once%2070%20cm%20wide. find
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The whole thing is worth seeing and you can also take a break and relax here
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It's called the Ulmen Maar Tunnel and connects the Jungferweiher pond and the Ulmen Maar. The tunnel is finished and has been open to the public since April 25, 2023. It's turned out simply fantastic. A visit is definitely worthwhile. It's open in the summer months from 6 a.m. to 8 p.m. In winter, it's also open during the day. The circular and hiking trail around the Jungferweiher pond and the Ulmen Maar is wheelchair accessible. Cycling through the tunnel is prohibited, as the tunnel is only 70 centimeters wide at its narrowest point. You don't need to be claustrophobic. A visit to the Ulmen Castle ruins, with its fantastic view over the town of Ulmen and the Ulmen Maar, is also highly recommended.
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The Ulmener Maarstollen was completed in 2023 and connects the Jungferweiher with the Ulmener Maar. Hopefully it stays as clean and beautiful as it was when I visited yesterday.
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The caves around Kolverath are primarily artificial, formed by centuries of millstone and slate mining in the Vulkaneifel region. These sites offer a unique glimpse into the area's industrial past and the human effort to utilize its volcanic resources. You'll find mine tunnels, former quarries, and historical sites rather than natural stalactite caves.
Yes, the Vulkaneifel region is home to several 'ice caves,' which are actually former millstone quarries. Notable examples include the Millstone Caves at Nerother Kopf and Rother Kopf, and the Birresborn Ice Caves. These caves maintain consistently cold temperatures, often between -1°C and +6°C, preserving icicles well into the summer months. They offer a unique microclimate and a tangible connection to the region's mining history.
You can explore several historical mining sites. The Matthias-Josef Stollen Slate Mine is a well-preserved quarry stone structure, ideal for a break. The Juliusstollen and Kaulenmännchen Sculpture allows you to enter tunnels for a few meters and learn about local legends and miners' lives. Another significant site is the Julius-Stollen Slate Mine, known for its informative signs and well-kept area.
Due to the consistently cool temperatures inside many of the caves, especially the 'ice caves' like those at Birresborn or Nerother Kopf, it's advisable to wear warm clothing, even in summer. Sturdy footwear is also recommended for exploring the uneven terrain within the mines and quarries.
The Matthias-Josef Stollen Slate Mine is listed as family-friendly. Generally, the historical mining sites offer an educational experience for families, providing insight into the region's past. Many sites have informative signs that can engage children. Always check specific access details for each location.
Many of the former mining sites and 'ice caves' in the Vulkaneifel region can be explored independently. However, it is highly recommended to bring a flashlight, especially for deeper sections of the Millstone Caves or Birresborn Ice Caves, as they can be dark. Some areas, like the Juliusstollen, have blocked passages after a few meters for safety.
The caves can be visited year-round. The 'ice caves' are particularly interesting in spring and summer when icicles can still be present. However, if visiting the Birresborn Ice Caves, be aware of the bat protection period from October 1st to March 31st, during which access may be restricted to protect the bat colonies.
Yes, the caves are often integrated into hiking routes. For example, the Heinzelmännchen Cave is located along a trail with a viewpoint. You can find various hiking routes around Kolverath that pass by these historical sites. Explore options like the 'Grenzen, Galgen und Geschichte' trail or other routes in the Hiking around Kolverath guide.
Beyond hiking, the Kolverath area offers various cycling opportunities. You can find road cycling routes, such as the 'Geisberg – Bergkrone Mine Tunnel loop from Gunderath,' or general cycling tours like the 'Bergkrone Mine Tunnel – Center Parcs Park Eifel loop from Sassen.' More options are available in the Road Cycling Routes around Kolverath and Cycling around Kolverath guides.
The Bergkrone Mine Tunnel is a former barite mine that operated for over 100 years. It features a very nicely designed entrance to the former pit, showcasing the region's extensive mining history. While the tunnel entrance may be closed for entry, the site itself provides a rich historical context of barite extraction in the Vulkaneifel.
The caves, particularly the millstone quarries, reveal unique rock formations resulting from the mining process within the porous volcanic rock. The stable, cold environment of the 'ice caves' creates a distinct microclimate, sometimes preserving ice formations. Additionally, the Birresborn Ice Caves serve as important winter quarters for numerous bat species, highlighting their ecological significance.
Visitors appreciate the historical insights offered by the well-preserved mining sites and the informative signs detailing their past. The unique experience of the 'ice caves' with their consistently cold temperatures and ice formations is also a highlight. Many enjoy the opportunity to combine cave exploration with scenic hikes in the surrounding Vulkaneifel landscape.


Extend your search for the best caves by checking out these guides of the top ones around Kolverath: