Phoenicis Lacus

A dark spot resembling a sea on Mars first spotted in the 19th century. It is the southwestern extension of the maze-like Noctis Labyrinthus system of deep valleys. It was formed by the uplifting of the Tharsis plateau.

Web Pages

 * http://en.wikipedia.org/wiki/Phoenicis_Lacus_quadrangle

Complex Terrain at Phoenix Lake (Dec 10)

 * See Phoenicis Lacus, Noctis Labyrinthus, Tharsis Plateau


 * http://www.space.com/9670-images-mars-phoenix-lake-region-reveal-complex-terrain.html