Gale Crater on Mars, where NASA's Curiosity rover is set to land, belongs to a family of large, very old craters shown here on this elevation map. The data come from the Mars Orbiter Laser Altimeter instrument on NASA's Mars Global Surveyor.

Gale Crater on Mars, where NASA's Curiosity rover is set to land, belongs to a family of large, very old craters shown here on this elevation map. It has one of the lowest elevations among this family.

The data come from the Mars Orbiter Laser Altimeter instrument on NASA's Mars Global Surveyor.

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