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The Possible Remains of a Volcanic Collapse on Mars

Near the middle of this photo from the High Resolution Stereo Camera on the European Space Agency’s Mars Express is the Siloe Patera. Siloe Patera lies in the Arabia Terra region of Mars, and measures 20 km by 40 km. Recent research suggests it could be the remains of a supervolcano. » 5/25/15 10:29am 5/25/15 10:29am