Description
Mysterious Underworld — Caves in the Kalkalpen National Park. Nature in the Upwind, National Park Kalkalpen Zeitschrift, issue 10, Winter 1994, pp. 26-29.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Geheimnisvolle Unterwelt - Höhlen im Nationalpark Kalkalpen | Open resource |