Grotte di Oliero
A karst spring cave in the Brenta River valley, where you enter an underground lake of emerald water by small boat. Outside are a nature park and a speleology museum.
The Grotte di Oliero lie in the Brenta River valley (Valstagna), about 12 km north of Bassano del Grappa. They are one of the largest karst springs in Italy, where an underground river emerges and flows into the Brenta River. Visitors can take a flat-bottomed boat into the Grotta Costa to see the clear, emerald underground lake and stalactites, then walk through a second cave. The tour takes about 1 hour. Outside the caves are a nature park shaded by trees and a speleology museum. You can also go rafting and kayaking on the Brenta River. Admission is about 10 to 12 euros. The caves are open from March to October, and they are crowded on weekends in peak season.
Opening hours
Approx. Mar–Oct 09:30–18:00 (check the official website)
Nearby sights
- Ponte Vecchio, Bassano del Grappa
- Marostica Chessboard Square
- Monte Grappa & Military Memorial
- Asiago Plateau
- Gipsoteca Canoviana, Possagno
- Asolo
- Villa Barbaro, Maser
- Teatro Olimpico