Caption: 
NASA’s Dawn spacecraft captured this 12.5-mile-across close-up of the central peak of the 99-mile-wide Urvara impact crater on Ceres.  The remarkable 6,500-foot central ridge is made from materials uplifted from depth, arising from terrains enriched with products of rock-water interactions, such as carbonates. 

Credit: 
Image Courtesy of NASA/JPL-Caltech/UCLA/MPS/DLR/IDA