Bigonda and Calgeron caves
Two extensive karst environments near Selva di Grigno, shaped by water and closely connected with local speleology.
Useful facts
- Bigonda
- Over 27 km of passages
- Bigonda
- About 50 lakes and sumps
- Calgeron
- About 3.6 km · 11 lakes
- Access
- Accompanied experts only
What you can do
Learn about the karst landscape through official sources. Any entry requires experience, equipment and specialist guidance.
Why visit
Bigonda and Calgeron reveal the mountain’s hidden side and are among Grigno’s most distinctive natural features.
Season and profile
These are not tourist caves for casual visits. They are suitable only for cavers or properly organised outings.
Access
Use Selva di Grigno as the safe reference point. Never follow improvised directions or enter without an experienced group.
Before you go
Never enter independently. Calgeron access is currently suspended during path works and the route is declared unsafe; flooding can also make Bigonda dangerous.
Images of the place
Your stay, at your own pace
Casa Gobbo welcomes you to Grigno: explore Valsugana in your own way.