Diving Italy’s Caves & Inland Sinkholes

About Caves & Inland Sinkholes

Italy’s inland karst hides some of Europe’s most spectacular and demanding cave and sinkhole dives. The Grotta di Frasassi in the Marche has flooded sumps and the Lago di Cristallo for certified cave divers. The Grotte di Pastena in Lazio and the Su Gologone resurgence in Sardinia offer clear, deep cave systems, while the Pozzo del Merro near Rome is the deepest flooded sinkhole on Earth at 392 m. The Laghetto di Cà Basse in Veneto is a flooded quarry used for training. These sites demand technical certification, strict planning and respect for the overhead environment. The region rewards careful planning and respects the strong Italian marine-protection rules, offering rewarding diving for a range of Mediterranean experience levels.

Highlights

• ✓Grotta di Frasassi: flooded show-cave sumps for certified cave divers
• ✓Pozzo del Merro: the world’s deepest flooded sinkhole at 392 m
• ✓Su Gologone: a Sardinian karst resurgence with deep blue cave systems
• ✓Grotte di Pastena: Lazio’s flooded passages with clear water
• ✓Laghetto di Cà Basse: a Veneto training quarry with platforms

Getting There

Fly into Ancona (AOI), Rome (FCO) or Olbia (OLB), then drive to the caves. Dive bases and guides operate from the Marche, Lazio, Sardinia and Veneto sites.