Mosaic of two Mariner 10 images showing Hitomaro crater (near center) and vicinity on Mercury.  The images were taken within less than 1 minute of each other on Mariner 10's first flyby (of three) on March 29, 1974.  The larger basin centered to the right is not named as of this upload, nor are other craters.
James Stuby based on NASA images
Mariner 10 Image Archive, images <a rel="nofollow" class="external text" href="http://ser.sese.asu.edu/M10/IMAGE_ARCHIVE/SingleImage.html?image_number=27430">27430</a>, <a rel="nofollow" class="external text" href="http://ser.sese.asu.edu/M10/IMAGE_ARCHIVE/SingleImage.html?image_number=27431">27431</a>