Occator Crater is the mesa or large butte with a flat top located in the lower right hand corner of the image. It has been puzzling scientists since Dawn approached Ceres because its brightness was so intense that people were speculating if light could somehow actually be emanating from within the body. Many details are now visible in the boundaries between the bright and dark material but it is not yet clear if the lines are runoff, splatter or some other process yet to be understood.