The Great Basin on Saturn's Tethys.

Some moons wouldn't survive the collision. Tethys , one of Saturn's larger moons at about 1000 kilometers in diameter, survived the collision, but sports today the expansive impact crater Odysseus. Sometimes called the Great Basin , Odysseus occurs on the leading hemisphere of Tethys and shows its great age by the relative amount of smaller craters that occur inside its towering walls . Another large crater, Melanthius , is visible near the moon's terminator . The density of Tethys is similar to water-ice . The above digitally enhanced image was captured in July by the robot Cassini spacecraft in orbit around Saturn as it swooped past the giant ice ball .