Goodbye, Hollows

As NASA MESSENGER enters its final days, we are getting our last looks at some of our favorite features. Hollows, discovered in MDIS images during the orbital phase of the mission, are always photogenic. Three small hollows can be spotted in this scene located to the northwest of the Caloris basin near Timgad Vallis, including one that is surrounded by low-reflectance material. Date acquired: April 14, 2015 Image Mission Elapsed Time (MET): 71304311 Image ID: 8326733 Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS) Center Latitude: 59.1° Center Longitude: 116.2° E Resolution: 17.1 meters/pixel Scale: This scene is approximately 17 km (11 miles) across http://photojournal.jpl.nasa.gov/catalog/PIA19425