South
Réserve naturelle nationale de la grotte de Gravelle: Underground Protected Nature Reserve
A limestone cave sanctuary in the Bourgogne-Franche-Comté region
This protected area represents a specialized subterranean habitat in the French Jura, preserving essential maternity and hibernation roosts for eleven bat species. The reserve, set within forested limestone cliffs, remains a key node in the regional network of protected underground sites, emphasizing the conservation of fragile environments.
- Area
- 0.014 km²
- Established
- 1992
- IUCN
- IV
- Relief
- Upland














