Otanmäki mine, Iron mine and cultural heritage site in Kajaani, Finland
The Otanmäki mining complex contains extensive tunnel networks, hoisting towers, and ventilation shafts spread across the industrial grounds of Kajaani.
The mine operated until 1985, establishing itself as a major global supplier of vanadium through combined production with the Vuorokas facilities.
This industrial landmark represents the evolution of Finnish mining practices and their impact on local communities throughout the twentieth century.
The site maintains direct access to railway connections and high-voltage power lines, supporting the planned resumption of mining operations by 2026.
The mine contains approximately 24 million tonnes of ore deposits, featuring substantial concentrations of magnetite at 32% and ilmenite at 31%.
Location: Kajaani
GPS coordinates: 64.11639,27.10111
Latest update: March 24, 2025 17:51
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