Dunes and old glaciers in Renaudot Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). Arrows point to old glaciers along the crater wall. Note: this is an enlargement of the previous image.
Renaudot Crater is an impact crater in the Casius quadrangle on Mars at 42.4° N and 297.4° W. and is 64.0 km in diameter. Its name was approved in 1973, and it was named after Gabrielle Renaudot Flammarion . Along its wall are evidence of old glaciers. The floor bears a field of dunes.