Ojamo Mine is a vast, flooded mine with an entry through a lake. The facilities are excellent, including a safe dock entry, warming hut, dressing trailer and fire pit. Exploration has been completed down to the 138 meter level, although deeper levels exist. Ice is controlled in the dock area by running a small compressor to keep an entry pool open. A safety diver is always dressed and prepared to respond to overdue divers and several safety bottles are cached in critical locations in the passages. The dive itself feels like a natural cave, but he artifacts of mining are scattered through the cave, making it feel like a wreck dive too. Rebreathers and scooters are used by many divers here in order to reach distant passages like Hell's Gate, where I had the fortunate opportunity to dive with Janne Halonen, Janne Suhonen and Antti Apunen.
Top: A beautiful example of the photography of Janne Suhonen and his team at Ojamo Mine.
Below: Janne Halonen preps his Inspiration Vision rebreather for diving in Ojamo Mine near Helsinki, Finland.
