Caves around Haßmersheim offer a range of underground experiences, from natural grottoes to historical facilities. The region, situated in the Neckar Valley, features diverse geological formations and man-made structures. While natural caves with extensive formations are found further afield, the immediate area provides unique underground sites. These locations contribute to the area's natural and historical landscape, providing points of interest for exploration.
Last updated: May 14, 2026
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Popular around Haßmersheim
The Bundeswehr's underground facility in Neckarzimmern is a huge, complex warehouse with approximately 170,000 square meters of space and over 40 kilometers of roads and railways – originally a gypsum mine dating back to the 18th century. Today, over 190,000 items are stored there, but what exactly is in the crates remains secret.
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A long staircase of irregular sandstone steps leads to this beautiful spot. At the top, you can sit in a small covered arbor, enjoy the view, and listen to the babbling brook. Many thanks to everyone who cares for and maintains this place.
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The "Brasse" tunnel entrance is part of the historic "Goldfisch" underground relocation in Obrigheim, which served as an underground aircraft engine factory during World War II. The "Brasse" tunnel was a planned expansion, but only partially realized. These tunnels were built by concentration camp prisoners and forced laborers under extreme conditions.
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The natural staircase to the Lourdes Grotto in Höchstberg is a picturesque yet challenging path that leads pilgrims and hikers to the grotto. This staircase consists of 256 slippery and varied natural steps that lead through the forest down into the Tiefenbach valley. The path is particularly challenging in wet weather as the steps can be slippery.
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This grotto is a replica of the famous Grotto of Lourdes in France and offers a quiet place for prayer and reflection. The grotto is a place of peace and quiet, surrounded by nature and offers a wonderful way to escape from everyday life and enjoy a moment of silence.
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Coming from Höchstberg, a small sign on the mountain barn shows the way from above to the grotto. From below the Untergriesheimer Weir car park, steep stairs go up.
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In the hot summer, feeling the cool breeze in front of it - indescribable
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The area around Haßmersheim offers a diverse range of underground experiences, including natural grottoes, historical underground facilities, and former mining tunnels. These sites reflect both natural geological processes and human history in the region.
Yes, the region features significant historical underground sites. You can visit the Brasse Tunnel Entrance, which is part of the historic "Goldfisch" underground relocation, an aircraft engine factory during World War II. Another notable site is the Bundeswehr Underground Storage Facility Neckarzimmern, a vast complex originally an 18th-century gypsum mine, now used for storage.
The Lourdes Grotto in Höchstberg offers a quiet place for prayer and reflection. It's a replica of the famous Grotto of Lourdes in France, accessible via a natural staircase of 256 steps, providing a serene retreat surrounded by nature.
While Haßmersheim itself features grottoes, for natural caves with impressive stalactite and stalagmite formations, you would need to venture slightly further afield. The **Eberstadt Stalactite Cave** in the broader Neckar-Odenwald-Kreis region is a notable example, offering exploration of a two-million-year-old cave with stunning geological features.
Accessing the Lourdes Grotto involves navigating a natural staircase of 256 steps. This path can be challenging, especially in wet weather when the steps may be slippery. There are also steep stairs from the Untergriesheimer Weir car park up to the grotto.
The Notburgahöhle is located directly on the Neckar. Access can be adventurous, involving climbing a washed-out "stone ladder" and navigating a very narrow path along a steep wall. It's important to note that the cave may not be reachable during high water levels due to its proximity to the river.
Yes, there are numerous hiking opportunities in the vicinity. For easy hikes, you can explore routes like the "Brasse Tunnel Entrance – Neuburg Castle loop" from Hochhausener Weinberge. You can find more options on the Easy hikes around Haßmersheim guide.
Beyond exploring the caves, the region offers various outdoor activities. You can find many options for road cycling, such as the "View of Hornberg Castle – Notburga Church Hochhausen loop" from Haßmersheim, detailed in the Road Cycling Routes around Haßmersheim guide. Running trails are also popular, with routes like the "Neckar Footbridge, Haßmersheim – View of Hornberg Castle loop" available in the Running Trails around Haßmersheim guide.
Visitors to the underground sites around Haßmersheim appreciate the unique blend of natural beauty and historical significance. The peaceful atmosphere of places like the Lourdes Grotto and the intriguing history behind sites like the Brasse Tunnel Entrance and the Bundeswehr Underground Storage Facility are frequently highlighted.
Specific public transport details for each individual site are not extensively documented. However, the region is generally accessible, and planning your visit by checking local bus or train connections to nearby towns like Höchstberg or Neckarzimmern, followed by a walk or short taxi ride, would be advisable.
The Bundeswehr Underground Storage Facility Neckarzimmern is a working storage facility. While its vastness and history are impressive, public access for general tours is not explicitly detailed and is likely restricted due to its operational nature. Information about its contents is also kept confidential.


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