Agostino Petroni/Undark

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Tourists visit the Solfatara crater, part of the Campi Flegrei Volcano, the biggest caldera of Italy.

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Up the coast from Pompeii, another city grows on top of an underground volcano Up the coast from Pompeii, another city grows on top of an underground volcano

By Agostino Petroni/Undark

Posted on Aug 9, 2023