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18. Hadriaca Patera
18. Hadriaca Patera

Much like Tyrrhena Patera (slide #17), Hadriaca Patera is a deeply eroded feature having little vertical relief. Several impact craters are superimposed on the eroded flanks, indicating a great age for this volcano. A large channel has its source near the southeastern margin of the volcano; the fluid that carved the channel flowed southwest into the interior of the Hellas basin.

30 S, 267 W; Viking Orbiter frame 106A09, shading corrected version.

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