Thumbprint Texture on Dark Dunes in Rabe Crater

This image from NASA Mars Reconnaissance Orbiter shows part of the floor of Rabe Crater, a large impact crater in the Southern highlands. Dark dunes cover part of crater floor, and contrast with the surrounding bright-colored outcrops.

This image from NASA Mars Reconnaissance Orbiter shows part of the floor of Rabe Crater, a large impact crater in the Southern highlands. Dark dunes cover part of crater floor, and contrast with the surrounding bright-colored outcrops.