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Olympus Mons

Target Name:  Mars
Spacecraft:  Viking orbiter
Produced by:  USGS/NASA
Copyright: Public Domain

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Olympus [oh-LIM-pus] Mons is the largest volcano known in the solar system. It is classified as a shield volcano, similar to volcanoes in Hawaii. The central edifice of Olympus Mons has a summit caldera 24 kilometers (15 miles) above the surrounding plains. Surrounding the volcano is an outward-facing scarp 550 kilometers (342 miles) in diameter and several kilometers high. Beyond the scarp is a moat filled with lava, most likely derived from Olympus Mons. Farther out is an aureole of characteristically grooved terrain, just visible at the top of the frame.

This image is in the public domain and is copyright free.

Copyright © 1995-2013 by Calvin J. Hamilton. All rights reserved.