This image, taken by NASA's Dawn spacecraft, displays a linear structure trending from northeast to southwest (lower left to upper right). The graben -- what geologists call a linear feature where terrain has dropped -- might be interpreted as a chain of collapsed pits or secondary craters. The crater at center right displays terraced walls, a common feature among the impact sites of Ceres. The image was taken on Oct. 6, 2015, from an altitude of 915 miles (1,470 kilometers). It has a resolution of 450 feet (140 meters) per pixel. The image is located at 31 degrees north latitude, 120 degrees east longitude. http://photojournal.jpl.nasa.gov/catalog/PIA20123