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Rhineland-Palatinate

Landkreis Mayen-Koblenz

Top 20 Caves in Landkreis Mayen-Koblenz

Best caves in Landkreis Mayen-Koblenz are primarily shaped by the region's volcanic history and historical mining activities. This area, part of the Vulkaneifel, features a unique underground landscape. Subterranean sites offer insights into geology, ancient Roman engineering, and industrial heritage. The district provides a range of accessible underground attractions, many integrated into the Volcano Park.

Best caves in Landkreis Mayen-Koblenz

  • The most popular caves is Trass Caves Brohltal, a cave that features mighty rock faces and a jungle atmosphere.…

Last updated: May 4, 2026

Trass Caves Brohltal

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The Trasshöhlen and the Wolfsschlucht gorge, just a few minutes away, are the two absolute hiking highlights in the Brohltal valley.

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Trass caves

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"The sky in the Brohl Valley darkened as the Laacher See volcano erupted just five kilometers away. A blazing-hot mixture of lava particles and gases shot into the atmosphere at …

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Genoveva Cave

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When you look at the Genoveva Cave, you can easily imagine how people used to seek shelter there. In the ARD fairy tale adaptation of Rumpelstiltskin, the Genoveva Cave was …

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The Sandkaul near Ettringen in the Volcanic Eifel.🖤
This former volcanic rock mining area is located on the edge of the Hochstein volcano, north of Ettringen on the L 82 …

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Sieben Stuben Lava Caves

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Climb over the Seven Stuben on the Kottenheimer Büden with great views of Kottenheim. In the Second World War, the so-called "Siewe Stuwwe" (= seven rooms), caves in the rock …

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Pyrmont Cliff Trail

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Very varied hike with great highlights such as Pyrmont Castle, the Elzfall at the Pyrmonter Mühle or the romantic path through the Elztal.
It is not for nothing that the …

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In addition to the official trass caves, there are also the low cave shafts. But these are really low and dark, so a flashlight is a must. In spring 2020 …

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Siewe Stuwe Trail Section

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Unfortunately, the area and the ascent of the Siewe-Stuwwe-Weg are bare. Not very nice.

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Old Slate Mine Tunnel

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The tunnel goes about 6-8m deep into the Schieferberg

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Interesting place where you can learn something about mining in the Nettetal.

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Nico
November 6, 2025, Sieben Stuben Lava Caves

Impressive colors, especially now in autumn.

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The Trass Caves in the Brohl Valley are deep, branching cave passages made of volcanic trass rock – formed around 13,000 years ago by the eruption of the Laacher See volcano.

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On the 🧡Dream Trail, dotted with many highlights, this is a real outdoor highlight, practically an adventure playground for adults: Impressive large trass caves...- Endless photo opportunities beckon here📸🎨🖌. Pleasantly cool & refreshing, especially in the warmer summer season🌞🌡. There are also numerous free parking spaces, some of them shaded, next to the large 🚂viaduct🌞🌡

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The freely accessible trass caves in the Brohltal are located below Bad Tönisstein on the Brohltalstraße (Federal Highway 412) at the height of the "Jägerheim" inn. The caves were formerly used by the trass millers: they had the raw material, the freshly cut trass "arks", dried there.[1] There are parking spaces for cars near the caves. The Kell Cave and Gorge Trail, a circular hiking trail, leads past the trass caves. Source: https://www.aw-wiki.de/index.php/Trassh%C3%B6hlen_im_Brohltal

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A photogenic relic of an old mill is this water wheel on a tributary of the Nette.

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Great cave passages, don't forget your flashlight

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It's a shame that the Sandkaul Caves are used by some people as a dumping ground for their garbage.

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🪖The tunnels in the mountain once served to protect the population from attacks during the World War🧨... 🎨An interesting, exciting outdoor adventure today. You can enter the cave about 20 meters... Flashlight 🔦 makes sense here. It's scary....- then turn it off for a moment!🖤🫨

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Frequently Asked Questions

What makes the caves in Landkreis Mayen-Koblenz unique?

The caves in Landkreis Mayen-Koblenz are primarily shaped by the region's volcanic history and extensive historical mining activities. You'll find a mix of man-made underground labyrinths, such as the vast Trass Caves Brohltal and the Sandkaul Caves near Ettringen, alongside sites like the Mendig Lava Cellars and the Roman Mine Meurin, which offer deep insights into geology, ancient engineering, and industrial heritage.

Are there natural caves or are they mostly man-made?

Many of the prominent 'caves' in the region are actually extensive underground structures created by human activity, primarily basalt and tuff mining. Examples include the Mendig Lava Cellars, the Millstone Caves, and the Roman Mine Meurin. However, natural formations and rock shelters, like the Genoveva Cave, also exist, often with historical significance.

What historical significance do the underground sites in Mayen-Koblenz have?

The underground sites hold significant historical value. The Roman Mine Meurin, for instance, is the largest underground tuff mining area from Roman times north of the Alps. Other sites, like the Mendig Lava Cellars and the Millstone Caves, showcase centuries of basalt mining for brewing and construction. Some, like the Sieben Stuben Lava Caves, even served as air raid shelters during World War II.

Can I visit any ice caves in the wider Vulkaneifel region?

Yes, while not strictly within Landkreis Mayen-Koblenz, the Birresborn Ice Caves in the wider Vulkaneifel area are a notable example. These former basalt millstone mines are famous for maintaining consistently cold temperatures, often below 7 degrees Celsius, allowing icicles to persist well into warmer months. They are typically open for exploration from April to October.

Are there family-friendly caves to explore in Landkreis Mayen-Koblenz?

Absolutely. Several sites are suitable for families, offering an engaging experience for all ages. The Trass Caves Brohltal and the Sandkaul Caves near Ettringen are listed as family-friendly. The Sieben Stuben Lava Caves are also described as fun for the whole family, with small heights and rugged rocks to explore.

What should I wear or bring when visiting the caves?

For many underground explorations, especially in less developed sites like the Birresborn Ice Caves or some millstone caves, sturdy shoes are highly recommended. A torch or headlamp is often essential due to the darkness, and a helmet might be advisable for certain areas. Even in summer, temperatures underground can be cool, so a light jacket is a good idea.

When is the best time to visit the caves in the region?

Many caves and underground attractions, especially those integrated into the Volcano Park, are accessible year-round. However, some sites, like the Birresborn Ice Caves, are typically open from April to October to protect bat populations during their winter hibernation. It's always a good idea to check specific opening times for the site you plan to visit.

Are there hiking trails near the caves in Landkreis Mayen-Koblenz?

Yes, the region offers numerous hiking opportunities that often incorporate or pass by these underground sites. You can find many routes in the Hiking in Landkreis Mayen-Koblenz guide, including popular 'Traumpfade' like the Höhlen- und Schluchtensteig, which directly translates to 'Cave and Gorge Trail'.

What other outdoor activities can I do near these caves?

Beyond hiking, the area around the caves in Landkreis Mayen-Koblenz is excellent for cycling. The Cycling in Landkreis Mayen-Koblenz guide features routes like the Maifeld Cycle Path, which includes tunnels and offers a different perspective on the region's landscape and history.

What do visitors enjoy most about the caves in Landkreis Mayen-Koblenz?

Visitors frequently appreciate the unique blend of natural beauty and historical significance. Exploring the mighty rock faces and 'jungle atmosphere' of the Trass Caves Brohltal is a highlight. Many also enjoy imagining ancient life in places like the Genoveva Cave and the adventurous exploration of the Sieben Stuben Lava Caves.

Can I find any Roman-era underground sites in the area?

Yes, the Roman Mine Meurin in Kretz, part of the Volcano Park Mayen-Koblenz, is a significant Roman-era site. It represents the largest underground tuff mining area from Roman times north of the Alps, offering a fascinating look into ancient Roman engineering and resource extraction.

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