The Rilles of Posidonius

The squiggly (or sinuous) rille seen hugging the western wall of Posidonius crater was formed by a massive outpouring of lava chaotically flowing across the landscape. Nearby is a totally different type known as a linear rille. It formed later as the floor of the crater was uplifted and the now hardened lava cracked and pulled apart forming troughs.

• Latitude: 31.68°
• Longitude: 29.53°
• Camera: NAC
• Image Width: 68.0 km
• Image(s): M1108017413L
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