The jumbled and broken terrain in the picture on the left is known as chaotic terrain.
Uplands are lumpy with small bright outcrops of bedrock.
Lowlands or valleys in the chaotic terrain have floors covered by light-toned windblown d rifts. This image is typical of the very highest-resolution views of the equatorial latitudes of Mars. Malin Space Science Systems and the California Institute of Technology built the MOC using spare hardware from the Mars Observer mission.