Kossuth-barlang
A karst spring cave at Jósvafő in Aggtelek National Park whose end has been blocked by sumps since the 1950s. In 2009 the Amphora Búvár Klub passed the 'Reménytelen' (Hopeless) sump into a large new chamber, and later expeditions pushed further through more sumps with dives to about -47 m. It is an active exploration cave, not a visitor site; a cave diver died here in 2022 during a planned exploration dive, probably due to a collapse at around -48 m.
Facts
- Region: Hungary – Caves & Mines
- Area: North Hungarian Mountains
- Depth: 0–48 m
- Level: advanced
- Current: moderate
- Type: cave
- Coordinates: 48.487588, 20.550929 (approximate)
- Highlights: active karst spring cave, Reménytelen sump passed in 2009, dives to -47 m, exploration with long dive times, Aggtelek Karst World Heritage
- Permit: Not listed in Annex 4 of Decree 17/2021 (IV.9.) AM, so non-research diving cannot be authorised. Diving only within a cave-research permit (decree §§7–8: research permit for up to 3 years with a research leader; diving research requires a 'cave diver instructor trainer' or equivalent qualification) plus the Aggtelek National Park Directorate's custodian consent. In practice: by joining the permitted research team (e.g. Amphora Búvár Klub).
- Issuer / contact: Aggtelek National Park Directorate
- Phone: +3648506000
- Email: anpi@anpi.hu
- Website: https://www.anp.hu/
- Tips: Research-only: the cave is not on the decree's list of caves open to non-research diving, so diving is possible only as a member of a research team holding a research permit (with the national park directorate's consent). Deep, cold, technical exploration diving with collapse hazards. Not available to visiting divers.