The national park of Koli in eastern Finland is home to a famous, 34-metre-long crevice cave known as Pirunkirkko, or Devil's Church in English. A new study investigates the acoustics of the Devil's ...
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The Devil’s Church of Finland: Mystery Solved
Archaeologists found that Pirunkirkko—or Devil’s Church—a 34 m-long crevice cave in Koli National Park, produced a rare acoustic resonance at around 231 Hz. That lingering tone may explain centuries ...
The national park of Koli in eastern Finland is home to a famous, 34-metre-long crevice cave known as Pirunkirkko, or Devil’s Church in English. In folklore, this crevice cave was known as a place ...
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