Colorful Streaks.
This is an image of the central pit of an impact crater in the ancient highlands.

The central uplifts of large impact craters often collapse to form pits on Mars, but they are still structural uplifts and often expose deep bedrock with diverse rock types which have a variety of colors.

In this enhanced color subimage, we see colorful streaks, where the bedrock is eroding, moving downhill a bit, then getting swept by the wind.

Written by: Alfred McEwen
All original images are presented by:
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