Nirgal Vallis

Nirgal Vallis

. This valley meanders over 500 kilometers across the heavily cratered terrain on Mars. It is shown in topographic relief with a vertical accuracy of approximately 1 meter provided by the Mars Orbiter Laser Altimeter on the Mars Global Surveyor. 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 and GSFC.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University