Caves in Kelheim offer a diverse range of underground experiences within Bavaria, Germany. The region is characterized by its karst landscapes and the Altmühl valley, providing natural formations and historical sites. These caves serve as significant archaeological locations, revealing evidence of ancient human habitation and Ice Age fauna. The natural setting often includes views of the surrounding valleys and accessible hiking trails.
Last updated: May 3, 2026
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The Grundlose Grube > a geotope The Grundlose Grube is less of a sinkhole than a shaft cave. It is an approximately 35 m deep shaft with a 3-4 m wide opening. The funnel-shaped opening lies in the green sandstone; after 6 m, the boundary with the Jurassic limestone is reached. Here, the shaft widens to 7-9 m. From this depth, it narrows increasingly. The floor is filled with loose material. The Grundlose Grube belongs to the karst features of a younger (Quaternary) age. The Grundlose Grube is a bat roost of European importance. To preserve the cave as a year-round habitat, there is a YEAR-ROUND ENTRY BAN! Speleological exploration is possible in individual cases, but requires a special permit. The contact person is the Lower Nature Conservation Authority at the Kelheim District Office. Bavarian State Office for the Environment (LfU). https://www.umweltatlas.bayern.de/standortauskunft/rest/reporting/sb_geotope/generate?additionallayerfieldvalue=273H002 Further information and images can be found on the website below. https://www.lochstein.de/hoehlen/D/fralb/sfralb/H-Hemau/Grundlose%20Grube/grundlose.htm
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The tour through the cave is really interesting and entertaining. When the lights are turned off in the cave, it is completely dark 😃.
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Beautiful stalactite cave, unfortunately you are not allowed to take photos. At the end of the tour there is a multimedia show which is very well done.
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Under the link https://kirstenarmbruster.wordpress.com/tag/puderloch/ you can read the mystical story - The Frauenstein of Riedenburg in the Altmühltal - by Dr. Kirsten Armbruster can be read. It is about “God Mother” and other goddesses of prehistoric times. The powder hole is also mentioned there.
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Kind of impressive. But be careful, if you fall into this you won't have to order any new shoes
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It's not far from Prunn Castle to get to the grotto. There is climbing in the grotto. If you walk a little further you will come to a very nice viewpoint. But take good care of the children.
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Smaller caves can often be found in the rock.
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Beautiful stalactite cave with a small museum. The entrance fee is okay, there is a snack bar at the entrance with several shaded seating areas. The tour is varied and interesting, at the end there is a small multimedia show about the cave, well done.
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The Schulerloch Cave is particularly known for its beautiful flowstone formations, including stalactites and stalagmites. It features an extraordinary cup-shaped stalagmite forming a water basin, which is considered globally unique. Other caves like Friedrichsruh Cave offer large grottoes and rock formations.
Yes, several caves in Kelheim are suitable for families. The Schulerloch Cave offers guided tours with a multimedia show that can be engaging for children, and it has a flat, sand-covered path. The Klausen Caves are also considered family-friendly for self-guided exploration, and the Monastery Cave has stone steps, making it explorable with children.
Kelheim's caves hold significant historical and archaeological value. The Schulerloch Cave provided shelter to Neanderthals and Ice Age animals, with archaeological finds displayed nearby. The Klausen Caves are renowned as one of Bavaria's most important Ice Age sites, with discoveries including artifacts from Neanderthals and Cro-Magnon humans, and the oldest burial of an anatomically modern human in Germany.
Yes, the Schulerloch Cave offers 30-minute guided tours every half-hour. These tours include a multimedia show projected onto the cave walls, illustrating the Earth's origin, the Jurassic sea, and encounters with Ice Age giants and Neanderthals. The Klausen Caves, however, are accessible for self-guided exploration.
The Schulerloch Cave maintains a constant temperature of 9 °C (48.2 °F) with humidity around 80%. It is advisable to wear warm clothing and sturdy shoes, even during summer, to stay comfortable during your visit.
The Kelheim region offers a variety of outdoor activities. You can find numerous hiking trails, including the Weltenburger Höhenweg and the Juraerlebnispfad Essing. There are also extensive cycling routes like the Altmühl-Danube Tour, and challenging MTB trails for mountain biking enthusiasts.
Yes, the Friedrichsruh Cave, a relatively large grotto about 12 meters high and 18 meters wide, is a popular spot for climbers. Visitors often enjoy watching climbers in action here.
The Schulerloch Cave is generally open to visitors from spring through autumn, but it is closed on Mondays (except during Bavarian school holidays) and during winter to protect bats. The Klausen Caves are free to enter from April to September. Always check specific opening times before planning your visit.
Yes, the Schulerloch Cave has a café bistro on-site for visitors. Additionally, the Klösterl Hermitage and Cave Church, located near some cave systems, features a beautiful beer garden.
It depends on the cave. The Schulerloch Cave requires guided tours for exploration. However, the Klausen Caves are accessible for self-guided exploration, allowing you to explore at your own pace.
Beyond its impressive stalactites and stalagmites, the Schulerloch Cave is distinguished by a unique cup-shaped stalagmite forming a water basin, which is considered one-of-a-kind globally. It also offers a multimedia show during guided tours and hosts concerts during summer, utilizing its excellent natural acoustics.
Yes, the Klausen Caves are situated on a slope that offers views of the Altmühl valley. Similarly, the Klösterl Hermitage and Cave Church is a viewpoint offering scenic vistas in the Danube Valley.


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