syvyyshelsinki.fi · Club
Clear quarry event page with 18 m max depth.
Dive Spot Guide•
Hilloisten Louhos
Clear granite quarry used for controlled training dives.
Shore-entry quarry diving with controlled access, compact training routes, and good clarity for a Finnish inland site.
About Hilloisten Louhos
Hilloisten Louhos is a clear old granite quarry in southwestern Finland that works best as a controlled training site rather than a casual open-water swim. The quarry's hard walls, submerged features, and compact basin make it easy to build a deliberate route, and the access rules keep the site orderly. It is a good choice for divers who want quarry-style structure, calm planning, and repeatable practice dives.
•
Research Estimate At Hilloisten Louhos
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 7m
AccessChallenging entry effort
Aquatic LifeSome life
FacilitiesBasic facilities
Crowd / PopularityQuite busy
CurrentNo current
SurgeFlat calm
Where Is Hilloisten Louhos?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Hilloisten Louhos Planning Details
Depth range, seasonality, and planning context.
Reported Depth
0m - 19m
Depth Note
Public listings place the quarry at about 18-19 m maximum depth.
Best Season
Year-round, with the formal training calendar driving access more than weather.
Typical Conditions
Clear quarry water, cold freshwater, and a compact basin with training-friendly structure.
Safety & Access At Hilloisten Louhos
Hazards, restrictions, and access requirements.
Key Hazards
Cold waterRestricted access
Safety Notes
Access is controlled through club or operator channels, and the quarry is cold enough to demand proper thermal protection.
Access Restrictions
Entry is only granted through a dive club or the operating company, with diving limited to set times.
Legal Notes
Respect the quarry's access schedule and authorization rules before traveling.
Local Intel For Hilloisten Louhos
Community notes to help plan your visit.
Scuba Diving
Training-friendly quarry diving with a maximum depth around 19 m and a submarine-like feature near the start area.
Freediving
Freediving is not the main use case; this is a quarry for scuba training.
Snorkeling
Snorkeling is limited value here because the interesting structure sits below the surface.
Wildlife at Hilloisten Louhos
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Hilloisten Louhos
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Hilloisten Louhos
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility7m
Activity
No dive activity logged yet.
