For more than 100,000 years, the Methana volcano in Greece appeared dormant. No lava, no explosions, no ash clouds. It appeared extinct, like many other volcanoes today. An international research team led by ETH Zurich has reconstructed a detailed, long-term history of the Methana volcano. Their work is published in the journal Science Advances, and their conclusion is striking: While Methana appeared silent at the surface, enormous amounts of magma were steadily accumulating deep within its magma chambers.

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