9 March 2005 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a trough in the Labyrinthus Noctis region. Location near: 1.5°S, 92.5°W Image width: ~3 km (~1.9 mi) Illumination from: upper left Season: Southern Winter http://photojournal.jpl.nasa.gov/catalog/PIA07449