Ojamo Mine
About Ojamo Mine
Ojamo is a historic lime mine near Lohja, about 60 km west of Helsinki, with mining activity dating back to the 18th century. It has been used as a dive site for decades. The quarry is connected to Lake Lohja, and fish life is typically encountered in shallow open water near the lake rather than inside tunnel areas.
Where Is Ojamo Mine?
Safety & Access At Ojamo Mine
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Fish are generally seen in shallow open water close to the lake; tunnels are a separate environment.
Local Intel For Ojamo Mine
Community notes to help plan your visit.
On-the-ground
Notes currently available for this spot.
Aquatic Life
Perch and pike are commonly seen in shallow open water near the lake connection, but not in tunnel areas.
Ojamo Mine Dive Conditions Planner
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Exposure Profile at Ojamo Mine
Directional shelter context for incoming swell.
Recent Logged Visits At Ojamo Mine
Community dive logs and visit reports for this site.
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Dive Spot Log Averages At Ojamo Mine
Average conditions based on logged dives & visits.
Ojamo Mine Guide - Sources and Updates
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