Independent spot page repeating the quarry, access, wildlife, and popularity notes.
Flooded granite quarry with club-key access
Flooded granite quarry with club-key access
Järppilän louhos is a flooded granite quarry with an open-pit basin and a club-managed access pattern. Divers come for the sheltered quarry walls, clear freshwater, and a simple inland site that rewards steady buoyancy and route awareness. Plan ahead for the locked boom and key access, because entry is controlled even though diving is permitted. Perch and filamentous growth are the main life signs in the water.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Depth Note
Depth limits should be confirmed locally before planning the dive.
Best Season
Open-water season
Typical Conditions
Sheltered freshwater quarry conditions with relatively clear water and little natural movement.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Confirm access before travel, since the boom is locked when the quarry is closed and keys are held by local clubs and organizations.
Access Restrictions
The site is behind a locked boom; local diving clubs and organizations hold the keys and coordinate access.
Legal Notes
Diving is permitted, but access is controlled through the local key system, so permission should be arranged before arrival.
Community notes to help plan your visit.
Scuba Diving
A planned shore quarry dive with steady buoyancy, simple navigation, and controlled entry.
Freediving
Not a primary freedive target; the access setup and quarry-style planning favor scuba.
Snorkeling
Not a typical snorkel site; the main features are below the surface.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Independent spot page repeating the quarry, access, wildlife, and popularity notes.
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Controlled quarry dive with submerged trees

Clear granite quarry used for controlled training dives.