The tripto catalogue lists 9 caves and grottoes – dripstone caves in the Sauerland, the Swabian Jura and Franconian Switzerland, plus a former mine with colourful grottoes. All are suitable for children.
Atta Cave in Attendorn is one of the largest dripstone caves in Germany; the 40-minute tour shows sinter curtains and stalactites at a constant 9 degrees. Dechen Cave in Iserlohn has its own railway stop at the entrance and the German Cave Museum. The Saalfeld Fairy Grottoes are a former alum slate mine with, according to Guinness, the most colourful show grottoes in the world. On the Swabian Jura you will find the Karls and Bear's Cave, with the skeleton of an Ice Age cave bear, and the Nebelhöhle near Lichtenstein Castle, reached down 141 steps. In Franconian Switzerland, the Devil's Cave near Pottenstein is one of the best-known dripstone caves.
The catalogue's caves are in Baden-Württemberg and North Rhine-Westphalia (two each), and Bavaria and Thuringia (one each).
In practice: a tour usually lasts 40 to 90 minutes. Tickets cost €7–17 for adults, with much lower prices for children and family tickets everywhere. Caves stay around 9 degrees all year – don't forget a jacket. Some caves are seasonal, such as the Nebelhöhle, open from April to October, and Atta and Dechen caves sell tickets only at the ticket office.