1 February 2004
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows large windblown ripples (or, some might say, small dunes) in troughs between mesas of the Tempe Mensa region. The ripples are generally perpendicular to the trough walls, indicating that [missing text] the features blew through these canyons. The image is located near 33.5°N, 69.2°W. The picture covers an area 3 km (1.9 mi) wide; sunlight illuminates the scene from the lower left.