Taken about 28 minutes following MESSENGER 2010-2019's closest approach during the mission's second Mercury flyby, this NAC image, just one of a large mosaic set, focuses in on an impact basin with a nicely developed peak-ring structure. Subsequent impact events have resulted in smaller craters superimposed on top of the larger peak-ring basin. Peak-ring structures form during the impact process and can be found in many large basins on Mercury's surface. Color enhanced version of BM4390.