Cave diving · Europe
Cave diving in Finland
Finland has few natural diveable caves, and its overhead diving centres on flooded mines, above all the former Ojamo limestone mine in Lohja, one of the country's busiest dive sites with about 2,000 dives a year. Finnish technical divers are also prominent in cave exploration abroad, notably in Norway's Plura system.
How access works
Flooded mines are private or municipal property and are not open to the public. At Ojamo the City of Lohja grants operating rights (since 2024 to a divers' association and two professional training providers), and outsiders may not enter the area.
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 | |
|---|---|---|---|---|
 |
Ojamo mine pond (Ojamon kaivoslampi)Lohja | Ojamo Mine | Flooded mine | Restricted access |
Every fact on this page, with its source (3)
| Fact | Status | Source |
|---|---|---|
| The Ojamo mine pond in Lohja is one of Finland's busiest dive sites, with about 2,000 dives a year. | Reported | [1] |
| At Ojamo, the City of Lohja's operating-rights holders are a divers' association (since 2024), Luksia and Meriturva, and access for outsiders is prohibited. | Reported | [1] |
| A team of 17 Finnish divers carried out the March 2014 recovery in Norway's Plura cave. | Reported | [2] |
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 May be out of date: the newest source we found is old.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