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10 of 10 places
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Kakushöhle
Cave Mechernich-Eiserfey · Eifel · North Rhine-Westphalia
One of the few caves in North Rhine-Westphalia that can be entered without a guided tour and without paying an entrance fee: two large chambers in the Kartstein tufa, which have been used since the Palaeolithic period. Access is restricted to before dusk due to the bats.
- Adults
- free
Open to the public all year round, but entry is only permitted until dusk. The café by the car park is open from April to September, Tuesday to Sunday, 11 am–6 pm, and from October to March, Wednesday to Sunday, 11 am–5 pm. mechernich.de/tourismus-und-freizeit/die-…
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Römerbergwerk Meurin
Show mine Kretz · Eifel · Rhineland-Palatinate
An ancient tuff quarry dating from the time of Constantine, now completely covered: you walk through original Roman tunnels and can see the marks left by quarrying on the walls. There is also a workshop area featuring replicas of Roman machinery.
- Adults
- €7.00
15 March to 31 October, Tue–Sun and public holidays 10 am–5 pm, closed on Mondays; groups welcome all year round by arrangement. roemerbergwerk.de
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Besucherbergwerk Grube Bendisberg
Show mine Langenfeld (Eifel) · Eifel · Rhineland-Palatinate
Lead and zinc ore from the Siegen strata; according to the association, this is the only visitor mine in the Eifel where one can see the ore veins dating from the time of the formation of the Rhenish Slate Mountains. Three levels, one above the other, are connected by a spiral staircase and a ladder.
- Temperature
- 8 °C
- Duration
- 90 min
- Route
- 600 m
- Adults
- €8.00
All year round; standard guided tours on Saturdays, Sundays and public holidays at 11 am, 2 pm and 4 pm – however, all tours are by prior telephone booking only. grube-bendisberg.de
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Lava-Dome & Lavakeller Mendig
Rock cellar Mendig · Eifel · Rhineland-Palatinate
Beneath Mendig, at a depth of 30 metres, lies a vast network of basalt cellars, created during the quarrying of millstones. The constant coolness meant that, in the 19th century, they were used as storage cellars by the local breweries.
- Temperature
- 8 °C
- Duration
- 60 min
- Depth
- 30 m
- Adults
- €10.50
Tue–Sun and public holidays 10.00–17.30, last admission 16.45; also open on Mondays during the school holidays in Rhineland-Palatinate and North Rhine-Westphalia; Lavakeller guided tours: Tue–Fri at 1.30 pm, Sat/Sun/public holidays at 12 noon, 1.30 pm and 3 pm. Closed over Christmas, in January and during Carnival. lavadome.de
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Besucherbergwerk Mühlenberger Stollen
Tunnel Bleialf · Eifel · Rhineland-Palatinate
The only visitor mine for galena in the Trier administrative district, developed between 1839 and 1852 as part of the ‘Neue Hoffnung’ mine. At times, up to a thousand people worked underground in Bleialf; above ground, a mining trail complements the guided tour.
- Adults
- €5.00
1 May to 31 October, Sundays 2 pm–5 pm, last guided tour at 4.15 pm; groups of ten or more may also visit at other times by arrangement. besucherbergwerk.bleialf.org
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Besucherbergwerk Grube Wohlfahrt
Show mine Hellenthal-Rescheid · Eifel · North Rhine-Westphalia
Graphite mining in the Northern Eifel, where tunnelling began in the late Middle Ages. The Rescheid Local History Society runs daily tours – lasting an hour and a half deep into the mountain, including a visit to the museum in the mine house – with no booking required.
- Temperature
- 8 °C
- Duration
- 90 min
- Adults
- €6.50
Open daily all year round except on Christmas Eve and the two Christmas holidays; guided tours at 11.00 and 14.00, exhibition in the Grubenhaus 10.30–16.00. Groups of 8 or more are requested to book in advance. grubewohlfahrt.de
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Deutsches Schieferbergwerk Mayen
Tunnel Mayen · Eifel · Rhineland-Palatinate
A 340-metre-long labyrinth of tunnels 16 metres beneath Genovevaburg Castle, excavated in late 1944 as an air-raid shelter for around 3,000 people. Today, it houses an exhibition on Moselle slate, featuring mine trolleys, wire saws and a simulated trolley ride.
- Depth
- 16 m
- Route
- 340 m
- Adults
- €6.00
Daily from 10 am to 5 pm; closed on Mondays and Fridays; also closed on Mondays during the school holidays in Rhineland-Palatinate and North Rhine-Westphalia, as well as on public holidays. Closed for the winter break from early November to mid-March. mayen.de/kultur-tourismus/tourismus/eifel…
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Besucherbergwerk Grube Günnersdorf
Show mine Mechernich · Eifel · North Rhine-Westphalia
Lead-bearing sandstone was already being mined at the Mechernich Bleiberg in Roman times; in the 19th century, the mining district was one of the largest in Europe. The Günnersdorf shaft was not established until 1940 and tapped into the remaining ore deposits at greater depths.
- Duration
- 105 min
- Adults
- €7.00
Closed on Mondays; Tuesday to Saturday 2 pm–4 pm with a guided tour at 2 pm; Sundays and public holidays 11 am–4 pm with guided tours at 11 am and 2 pm. bergbaumuseum-mechernich.de
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Dokumentationsstätte Ausweichsitz NRW
Bunker Kall-Urft · Eifel · North Rhine-Westphalia
In the event of an emergency, the state government would have directed civil defence operations from here. The facility, which dates from the 1960s, is remarkably well preserved in its original state, and the equipment is still operational. It is located underground and is accessed via a flight of stairs.
- Temperature
- 7 °C
- Duration
- 120 min
- Adults
- €15.00
Public guided tour ‘Bunker Pur’ on Fridays and Saturdays at 4 pm, dates running until November 2026; booking required. ausweichsitz-nrw.de
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Römisches Kupferbergwerk Pützlöcher
Show mine Newel-Butzweiler · Eifel · Rhineland-Palatinate
Malachite and azurite were mined here in the mid-2nd century by the Romans – together with the Emilianus adit, one of the oldest documented underground mines in Germany. Later, the ashlars for Trier’s Porta Nigra were quarried from this site.
1 May to 31 October, by prior arrangement with the Butzweiler Local History Society only. heimatverein-butzweiler.de/sehenswuerdigk…
How this directory is made
It only lists places you can actually visit in 2026: show caves with guided tours, show mines, walk-in tunnels and bunkers. Museums without a way underground are left out, and so are sites that have closed. Prices, opening hours and temperatures come from the operators, and every entry names its source. If something could not be confirmed, it is missing rather than guessed. Place names stay in German, as they appear on signs and tickets.
What to expect underground
Underground it is the same temperature all year – between 3 and 20 °C at the places listed. Bring a jacket even in high summer, and sturdy shoes: paths are often wet and slippery. Most guided tours in Germany are in German only; many sites offer English leaflets or audio guides, so ask at the ticket desk. With a pushchair or wheelchair, use the filters above – far from every site is accessible.