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Phlegethon Catena (3-D)

This chain of collapse pits located on the southeast flank of Alba Patera, a volcanic complex, probably formed when empty underground lava tubes collapsed.

May 29, 2012

This chain of collapse pits located on the southeast flank of Alba Patera, a volcanic complex, probably formed when empty underground lava tubes collapsed.

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NASA/JPL-Caltech/MSSS

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