Molnár János-barlang
Cave and mine diving in Budapest · about 1 km from Rózsadomb (Budapest II)
- Max depth
- 100 m
- Trimix from
- 40 m
- Type
- Backmount
- Certification (estimate)
- Intro to cave
- DPV
- DPV possible
Active thermal cave under the Rózsadomb, formed by mixing corrosion: warm karst water rises through a fracture and feeds the artificial Malom-tó (mill pond), a few metres above the dry entrance.
More about Molnár János-barlang
Signed-in divers also see:
- Whether this site fits everyone's certification, gas and gear
- Access, parking and the route from the road
- Exact map pin and navigation
- Depth profile and sumps
- Configuration advice
- Warnings with sources (3)
- DPV suitability
- Driving times from your stay and a plan with the AI instructor
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Current conditions
Visibility, flow and water levels change quickly. Right before your dive, check what other divers report:
- MJ Cave ↗
Site of the only operator in the Molnár János cave: rules, prices and booking (also Kőbánya).
- BBTT – Barlangkutató Búvár és Természetvédő Társaság ↗
Hungarian cave-diving research club, with reports and videos from the Molnár János cave.
Plan a cave diving trip to Budapest
Enter your team, with certifications, gas and configurations, and see right away which caves fit. With driving times from your stay, fill stations and an AI instructor who thinks along.
Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training. Compiled from web research (MJ Cave: website, 2016 rules and Aug 2026 price list; Titán Búvár, Hidroszféra, Búvár-ABC, BornToDive, Aquanauta; Wikipedia; Scuba Diving 2017, Underwater360 2018, Index.hu 2011 and 2022, Honvédelem.hu 2021; Balaton Uplands National Park, Bükk National Park; Vaszary Kolos Kórház Esztergom; Sept 2026). Pins from Wikipedia. ~ = estimate. Rules change — check locally.