Valbrenta
Grotta dell'Acqua Nera (Lamon)
Info · exploration
Information only: an exploration project of the Gruppo Grotte Giara Modon, with sumps far into the cave. No source says the cave is open to visiting divers.
- Max depth103 m
- CertificationFull cave
- SpecialExperienced divers
Diving and fills
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Now at Grotta dell'Acqua Nera (Lamon)
The dive
A cave with a series of long sumps in cold water; visibility is poor in the sandy passages. A dye trace in 1928 linked the water to the Bus de la Lora near Castel Tesino.
Profile and sections
A cave with a series of long sumps in cold water; visibility is poor in the sandy passages. A dye trace in 1928 linked the water to the Bus de la Lora near Castel Tesino.
The Gruppo Grotte Selva di Grigno made the first attempt in 1972; between 1974 and 1977 Francesco Dal Cin and Alessio Fileccia passed the first sump and reached the third. In the early 2000s the Gruppo Grotte Giara Modon took up the work again. The breakthrough through the Strettoia della Rivelazione came in 2016, and in 2026 the team set up a camp inside the cave and added about 240 m.
Practical: information only.
- Depth and profile
- Down to 103 m and still descending; 2,558 m surveyed, sump 3 ~1.8 km long (InDEPTH 2026).
- Configuration
- Long sumps with carries in between: light expedition configuration (estimate).
Who can dive where
- At least Full cave
- Configurations: Sidemount / CCR
- Configuration unknown — research beforehand
- Goes down to 103 m (trimix or deco may be needed)
- Experienced divers only
This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.
How to get there
Near San Donato di Lamon (Belluno). Gear is carried between the sumps; since 2026 the team has a camp inside the cave.
Around Grotta dell'Acqua Nera (Lamon)
News
Access and rules change: check what applies locally right before your trip. Source: GDELT Project and the news feeds of diving magazines. Search for more news ↗ Searched automatically, last on 11 Nov 2026.
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