Today's VIS image shows dust devil tracks in Argyre Planitia. The dark streaks are made by dust devil activity scouring the surface and removing the lighter toned dust to reveal the darker rocky surface below. Orbit Number: 66386 Latitude: -46.532 Longitude: 314.96 Instrument: VIS Captured: 2016-12-01 02:09 http://photojournal.jpl.nasa.gov/catalog/PIA21294