Monte Corchia, in the Apuan Alps, is a good place to start. Here, you will find the largest karst complex in Italy, with about 60 kilometers of tunnels and karst potholes, as well as the Abisso Paolo Roversi, the deepest cave in Italy with a depth of 1249 meters.
The three main caves are well-equipped for tourists to visit: the Grotta del Vento in Garfagnana, the Grotte Equi Terme in Lunigiana (a real Geo-Archeo-Adventure Park) and the Antro del Corchia in Versilia, authentic "geological theaters" waiting to be discovered.
The Grotta del Vento (Wind Cave), in particular, has three guided paths: a one-hour flat path full of limestone concretions, a 2-hour path that includes a deep precipice descending to the underground river and a third 3-hour path that climbs 90 meters up the walls of a massive pothole.
