West side of Rossby Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter).
Rossby is an impact crater in the Eridania quadrangle on Mars at 47.5°S and 167.9°E, and it is 80 kilometers in diameter. Its name was approved in 1973, and refers to Swedish-American meteorologist Carl-Gustaf Rossby. Pictures show gullies on the wall of Rossby Crater.
Original source: https://en.wikipedia.org/wiki/ Rossby (crater). Read more