Example of layered rocks on the floor of Gale crater that were likely deposited in an ancient lake. The layered rocks are part of a nearly 300 m (close to 1,000 feet) thick sequence of layers that were deposited in an ancient lake that occurred in Gale crater. The scene is presented with a color adjustment that approximates white balancing, to resemble appearance under daytime lighting on Earth. (NASA/JPL-Caltech/MSSS)