Found with California grandson as we are visiting our Oberndorf relatives across the river here. A slimey slug was on the cache much to our disgust, but consider the location!
As the only extinct volcano in Austria is too far away, we will bring it back to the sunny shores of So Cal and look for volcano sites there or in NV where there is lots of obsidian, a sign of former volcanos.
TFTC!
Katz r Us