Best caves around Astert are situated within the Westerwald region of Germany, an area characterized by diverse geological formations. This landscape includes water-soluble rocks that have led to the creation of various underground sites. Visitors can explore both natural karst features and historical mining operations. The region provides a factual look into geological processes and industrial heritage.
Last updated: June 26, 2026
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Open every second Sunday from 2pm to 5pm (or by appointment)
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The first records of mining activity in the Luckenbach district date back to 1685/1686. The Edelstein brown iron ore mine runs from the tunnel entrance in the Hardt area, approximately 220 meters northwest, and was operated until around 1922, but became uneconomical. At the end of World War II, the tunnel served as an air-raid shelter. While the men were at war, the population, mothers and children, had to take refuge in the tunnel when air raid warnings sounded. Nowadays, however, only part of the mine is accessible due to overburden deposits. For safety reasons, a solid door was installed in the entrance area. From time to time, guided tours of the mine are offered, which I highly recommend.
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splendid
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This grotto is located near the monastery.
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"The Lourdes Grotto in Marienthal is a religious site located behind the pilgrimage church. It is open to visitors 24 hours a day, seven days a week. This grotto is a replica of the famous Lourdes Grotto in France, known as the site of Marian apparitions. In Marienthal, the grotto serves as a place of devotion, prayer and pilgrimage for believers from the region and beyond. Visitors come here to find solace, meditate and explore their spiritual needs. The atmosphere is often one of silence and devotion, while visitors have the opportunity to light candles and say prayers. The Lourdes Grotto of Marienthal is not only a place of faith, but also a place of rest and retreat for people of all backgrounds seeking spiritual fulfillment. " https://www.wallfahrtskirche-marienthal.de/ueber-uns/
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The Mother of God depicted and venerated here is the one from Lourdes. This well-known Marian pilgrimage site is located in the French Pyrenees and is visited by many people every year, including many sick people who hope for healing. The devotional image of the Mother of God has become widespread - not only in France - and Lourdes chapels and grottos have been built by believers everywhere. The church memorial day "Our Lady of Lourdes" is on February 11th, this is the anniversary of the Marian apparition (1858), when the Mother of God appeared to 14-year-old Bernadette Soubirous in a rock grotto very close to Lourdes. Bernadette later became a nun and died at the age of just 35. On December 8th (the Feast of the Immaculate Conception of Mary) 1933, she was canonized by Pope Pius XI. The commemoration of the Madonna of Lourdes is also World Day of the Sick.
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Former Edelstein ore mine. The former mine, whose tunnel mouth was reopened in 1991, is located in the Luckenbach district. It was apparently an underground mine operated by hand, as the first information from 1860 suggests. The ore was mined here between 1844 and 1920. The tunnel can also be visited.
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The Westerwald region offers a diverse range of underground experiences, from natural karst formations to historical mining operations. You can explore vast dripstone caverns, learn about slate mining, or visit grottoes and tunnels formed by geological processes. Sites include natural caves, visitor mines, and even religious grottoes.
Yes, the region has several historical mining sites. The Assberg slate mine in Kroppacher Switzerland offers tours at a depth of 20 meters, providing insight into the region's industrial heritage. Another notable site is the Grube Edelstein Visitor Mine, which offers guided tours about 100 meters into the mountain. You can also find the Stair Path to the Historical Slate Mine Limbach, which leads to another historical slate mine.
The Westerwald region is rich in natural geological formations. The Herbstlabyrinth near Breitscheid is Hesse's largest cave system, featuring impressive stalactites and an 80-meter-long, 32-meter-high underground space. The Heinzelmann Caves, formed by limestone dissolution, are located on the HöhenLuft hiking trail and showcase erosion in karst rock. Additionally, the Erdbach Karst Nature Trail provides an educational experience with its impressive rock formations and diverse flora.
Yes, the Langenaubach Basalt Quarry Tunnel near the Rothaarsteig am Aubach is a unique site. It features a deep rock cut leading to a tunnel through which basalt was historically removed. The tunnel is submerged year-round, and a path leads to a plateau with views into the quarry.
The Lourdes Grotto is considered family-friendly. While not a traditional cave, it's an accessible and serene grotto often visited by families. The Herbstlabyrinth, with its illuminated stalactites, also offers a captivating experience suitable for families.
The region around Astert is excellent for various outdoor activities. You can find numerous hiking trails, including those that lead to or past some cave sites. There are also extensive cycling routes and MTB trails available, allowing you to explore the diverse landscapes of the Westerwald.
Yes, several hiking opportunities exist. The Heinzelmann Caves are located directly on the HöhenLuft hiking trail. Additionally, the Stair Path to the Historical Slate Mine Limbach is a trail leading to a historical mine. You can find more hiking options in the Hiking around Astert guide.
Many of the underground sites, especially visitor mines and show caves like the Herbstlabyrinth, are accessible year-round or during specific seasons (e.g., Easter to October for Grube Edelstein). Natural karst formations and trails can be enjoyed in spring, summer, and autumn. Winter visits might offer a unique perspective, but it's advisable to check specific opening hours and conditions for each site.
Yes, guided tours are available for some sites. The Grube Edelstein Visitor Mine offers guided tours on specific weekends or by arrangement. The Assberg slate mine also offers tours into its depths. It's recommended to check the respective websites or local information for tour schedules and booking details.
Visitors frequently appreciate the unique insights into the region's industrial heritage, particularly at sites like the Assberg slate mine. The natural beauty of formations like those in the Herbstlabyrinth and the historical significance of places like the Stair Path to the Historical Slate Mine Limbach are also highly valued. The komoot community has contributed over 800 upvotes and 1000 photos, highlighting the appeal of these locations.
For those seeking a more challenging experience, the Felsenstübchen (Froneck-Nister Castle Ruins) is categorized as challenging and involves a climb. While not a deep cave system, its approach and the rock formation itself offer a more adventurous feel. Always exercise caution and be prepared for the conditions.
Beyond the mining sites, the Felsenstübchen (Froneck-Nister Castle Ruins) combines a natural cave-like formation with historical castle ruins, offering a blend of natural and man-made history. The Lourdes Grotto is a religious landmark, a man-made grotto inspired by the famous pilgrimage site, providing a cultural and spiritual connection to the underground.


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