Cave diving · Europe
Cave diving in Hungary
Hungarian cave diving centres on thermal-water caves, above all the Molnár János Cave under Budapest, which is surveyed to more than 6 km. Exploration and science are carried out by research diving societies working under national park permits, while recreational divers can visit through a licensed guided-dive operation.
How access works
Cave research, including research diving, is carried out under permits issued by national park directorates (for example the Duna-Ipoly National Park Directorate for the Molnár János Cave and the Balaton-Felvidék National Park Directorate for the Tapolca cave system), and the permit holders file annual research reports. Recreational diving in the Molnár János Cave is sold only as guided dives by the single licensed dive centre.
A general summary; each site page gives its own dated access information.
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Cave systems
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Entrances and dive sites
| Site | Cave system | Type | Access | |
|---|---|---|---|---|
 |
Molnár János Cave – Malom-tó spring entranceFrankel Leó út 48, Buda | Molnár János Cave | Cave entrance | Open to qualified divers, with conditions |
| Kőbánya Mine (flooded cellars)Kőbánya, eastern Budapest | — | Flooded mine | Restricted access |
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Dive centres and guides
| Provider | Where | Checked |
|---|---|---|
| MJ Cave – Molnár János Cave Dive Center | Frankel Leó u. 48, Budapest | 2026-10-14 |
A listing is not an endorsement.
Every fact on this page, with its source (3)
| Fact | Status | Source |
|---|---|---|
| Research permits for the Molnár János Cave (DINPI/4464-0/2025) and the Tapolca cave system (Balaton-Felvidék National Park Directorate 3370/2025) both run to 2027-12-31. | Verified | [1] |
| Recreational diving in the Molnár János Cave is offered as guided dives by a dive centre that describes itself as the only licensed operator. | Reported | [2] |
| The Molnár János Cave was surveyed to 6,225 m by the end of 2025. | Verified | [1] |
Verified: stated by an official or primary source we opened. Reported: from a secondary source only. Sources conflict: the note gives both versions. May be out of date: the newest source we found is old.
Written in our own words from the sources above. Report a correction