Discover the “world’s most colourful show caves” On a guided tour of the Fairy Grottoes show mine, you will experience the history of the former alum slate mine and learn how nature has created this unique work of art over centuries.At the end of the tour, a very special surprise awaits you in the fairytale cathedral that you will not forget. And this is not where the adventure ends: In the interactive adventure museum Grottoneum you can immerse yourself in the world of mining and minerals in a playful way, do experiments and become a researcher yourself at many hands-on stations. An experience for young and old. Included in the offer: - 1-hour guided tour of the Fairy Grottoes show mine - small surprise at the end of the tour - Entrance to the Grottoneum Adventure Museum Our tip: You visit our adventure world with children? During a special family tour of the fairy grottoes, the little guests are particularly well involved.