Grundlsee – Canyons
On the south shore about 1 km past Gasthaus Post, below the Austrian Post holiday home. Underwater canyons start at 5–10 m and run down to great depth.
Facts
- Region: Austria – Salzkammergut lakes
- Area: Inner Salzkammergut (Hallstatt, Grundlsee, Gosau, Altaussee)
- Level: intermediate
- Current: low
- Type: wall, channel
- Coordinates: 47.631722, 13.849583
- Highlights: underwater canyons starting at 5–10 m and running deep, altitude lake (708 m)
- Permit: The lake is private water of the Österreichische Bundesforste (ÖBf); ARGE Tauchen Österreich leases the diving rights, so a valid Dive Card is required (digital €18 per calendar year; plastic card from partner shops €20, 365 days; ordered online €23). Diving without it counts as trespass and a nature-protection offence. Check current terms.
- Issuer / contact: ARGE Tauchen Österreich – Dive Card
- Website: https://www.arge-tauchen.at/divecard
- Tips: Gravel car park on the left. Set a depth limit – the canyons lead deep. Dive times 08:00–17:00 (summer time 09:00–18:00).