Useful Information

Location: Mühlbach, near Dietfurt, Naturpark Altmühltal.
(49.022597, 11.618601)
Open: Cave: not accessible.
Karst trail: no restriction, guided walks once per month Sun 10:00.
Stein.Wasser.Höhle: All year daily 9-17.
Fee: Karst trail: Adults EUR 5, Children (0-14) EUR 2, Family EUR 10.
Stein.Wasser.Höhle: Adults EUR 3, Children (6-14) EUR 1, School Pupils EUR 1, Students EUR 1.
Classification: SpeleologyKarst cave SpeleologyRiver cave KarstKarst Trail
Light: n/a
Dimension: L=10,000 m.
Karst trail: L=8 km.
Guided tours: Karst trail: D=3 h.
Photography: allowed
Accessibility: no
Address: Karstgruppe Mühlbach e.V., Helmut Köhler, Bönerstr. 11, 90459 Nürnberg, Tel: +49-911-455958. E-mail: contact
As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
Please check rates and details directly with the companies in question if you need more recent info.


1990 first explorations.
20-JUN-1998 start of digging.
2001 cave discovered.
29-SEP-2005 inauguration of the karst trail Mühlbach.


The Mühlbachquellhöhle, although definitely not accessible to the public, is at the moment probably the most famous cave in Germany. It is a very recent discovery, which was made after consequent and intensive search and a several years long dig. And although there are other digs, which took even longer, this one was rewarded with one of the biggest cave in Germany, located in a karst area, which was formerly notorious for the lack of big caves.

Despite the inaccessibility of the cave, the small village Mühlbach is worth a visit. Located in the beautiful landscape of the Altmühltal (Valley of the river Altmühl) it has a nice karst spring, which is immediately used to power a mill, hence the name Mühlbach (mill brook). The Mühlbach is a tributary of the Altmühl.

An attraction like a show cave would increase the tourism income, and so the local officials tried to develop the cave as a show cave since it was discovered. Technical (or better monetary) difficulties prohibited this. In order to save the cave, the local caving club offered to advertise the village by publishing the cave and making multimedia shows. So there is still some publicity for the village, without the need to destroy the cave.

The source of the Mühlbach is the starting point of an 8 km long caving trail, which points out the various geological highlights of the area at 15 stations. These are primarily karstological in nature, but there is also the valley development of the Altmühltal to see. You can see sinkholes, karst crevices and even photos of the underlying parts of the Mühlbach spring cave on the panels. The adventure stations are particularly interesting for children, where they can slide through a concrete tube or learn about other things in a playful way. The KGM regularly offers guided tours for a small fee, which is donated to the association. The circular trail is a loop of the Jurasteig. You should plan on about two to three hours, depending on your fitness.

Bei der Mühlbachquelle befindet sich die Obermühle Mühlbach, die ursprünglich das Quellwasser zum Betrieb der Mühle nutze. Inzwischen befindet sich im Sägemühlstadel und im Steinstadel eine Ausstellung mit verschiedenen Abteilungen. Die Ausstellung Stein.Wasser.Höhle im Steinstadel enthält jedoch in den Gewölberäumen eine Ausstellung mit den Forschungsergebnissen der Höhlenforscher der Karstgruppe Mühlbach e.V.. Sie beschreiben die Entdeckungs- und Erforschungsgeschichte der Höhle den aktuellen Stand der Forschung, und bieten neben Höhlenplänen auch viele Bilder. Weitere Teile der Ausstellung sind die Jurahäuser der Altmühlregion, die Geschichte der Obermühle und ihre Instandsetzung, archäologischen Funde, sowie ein Blick auf das Wasserrad.