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Catacomb of Callixtus — Wikipedia
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The Catacomb(s) of Callixtus (also known as the Cemetery of Callixtus) is one of the Catacombs of Rome on the Appian Way, notable for containing the Crypt of the Popes (Italian: Cappella dei Papi), which once contained the tombs of several popes from the 2nd to 4th centuries.
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