Nirgal Vallis on Mars

Nirgal Vallis on Mars

Fig. 2.44 . This valley meanders over 500 kilometers across the heavily cratered southern highlands on Mars, with few tributaries. The valley network is shown in topographic relief with a vertical accuracy of approximately 1 meter provided by a laser altimeter on the Mars Global Surveyor. The direction of water flow would be downhill, to the lower right. Nirgal Vallis is located at 28.4 degrees south and 42.0 degrees west longitude (east longitude shown here). Nirgal is the word for "Mars" in Babylonian. (Courtesy of NASA/JPL/GSFC.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University