The Inner Circle
Rachmaninoff is a spectacular double-ring basin on Mercury, and this color view is one of the highest resolution color image sets acquired of the basin's floor. Visible around the edges of the frame is a circle of mountains that make up Rachmaninoff's peak ring structure, which surrounds concentric troughs located on the on the basin floor. The color of the basin's floor inside the peak-ring differs from the darker material outside of it, as can also be seen in this previously posted color image.
Date acquired: July 31, 2012
Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington