This view is a close-up of an area featured in a previous Gallery image. The region is located diametrically opposite the Caloris impact basin, and has been affected by converging seismic waves or ejecta that caused the peculiar "hilly and lineated" texture. Members of the Mariner 10 team informally called this the "weird terrain" when it was first discovered in 1974.
Date acquired: August 02, 2011
Image Mission Elapsed Time (MET): 220756231
Image ID: 581158
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: -29.92°
Center Longitude: 342.0° E
Resolution: 235 meters/pixel
Scale: The scene is about 248 km (155 mi.) across.
Incidence Angle: 85.4°
Emission Angle: 19.3°
Phase Angle: 104.7°
Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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