The famous agate quarry Hellerberg near Freisen. (Photo: Tobias Schorr)
More on VolcanoDiscovery:
Private geology tour on Santorini
: We offer you private geology tours to get to know the extraordinary geology and natural history of the island, but also aspects of the deep connection with its cultural history and archaeology.
: Guatemala - a land of volcanoes and the colorful Mayan culture with incredible variety. A dream destination for volcano enthusiasts and photographers!
Vulkane Italiens - order online
: 88 pages, brilliant color photos, German language - this beautifully illustrated guidebook is a perfect introduction and companion for all interested in Italy's rich and varied volcanic areas.