Uplifted Bedrock (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)

Caption NASA:"Large Impact Craters expose deep Bedrock. After the transient cavity forms, the Crater Floor rebounds and creates a permanent structural Uplift, typically equivalent to about 10% of the Crater diameter.
A Crater approx. 70 Km (43,47 miles) wide like this one, can raise up and expose Bedrock that was approx. 7 Km (4,34 miles) lower in elevation prior to the Impact.

Deeper rocks are usually older, and on Mars the oldest rocks are interesting because they are more likely to have been altered by water and provide clues to ancient environments and processes. This image reveals good Bedrock exposures with diverse rock types (as indicated by colors and textures)".