Ares Vallis

System of valleys on Mars. Contains teardrop-shaped Mesas, believed to have once diverted flood waters.

Web Pages

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

Seven Great Pictures (Dec 10)

 * See Bacolor Crater, Noctis Labyrinthus, Ares Vallis 


 * http://news.nationalgeographic.com/news/2010/12/photogalleries/101217-mars-pictures-odyssey-nasa-space-science-longest-photos/