Layers of rock exposed in the lower portion of a tall mound near the center of Gale Crater on Mars exhibit variations in layer thickness and range between dark and light tones in this image taken by NASA Mars Reconnaissance Orbiter.
Layers of rock exposed in the lower portion of a tall mound near the center of Gale Crater on Mars exhibit variations in layer thickness and range between dark and light tones in this image taken by NASA Mars Reconnaissance Orbiter.