Interior of Mark Twain crater on Mercury. Mosaic of MESSENGER Narrow Angle Camera images. Approximate north is to right. Source images are:<br><p>EN1072203681M<br>
EN1072203696M<br>
EN1072203711M<br>
Statistics for the center image are:<br>
Emission Angle: 48.4<br>
Incidence Angle: 41,7<br>
Latitude: -10.6<br>
Longitude: 221.2<br></p>
Phase Angle: 90.0
James Stuby based on NASA image
<a rel="nofollow" class="external text" href="https://pilot.wr.usgs.gov/">PILOT</a>, Planetary Image Locator Tool, USGS Astrogeology Science Center