Gravina Sotterranea opens part of the town's underground network of karst cavities and tunnels. The spaces were once used as cellars and shelters, and guided visits show a hidden layer beneath the old town.
Gravina Sotterranea opens part of the town's underground network of karst cavities and tunnels. The spaces were once used as cellars and shelters, and guided visits show a hidden layer beneath the old town.