This view, captured by the Wide Angle Camera (WAC), shows a trail of small craters. Such secondary crater chains are formed when the ejecta from a primary impact fall in the surrounding area, forming their own often overlapping small craters. Also visible in this image are smooth plains, formed by volcanism that has filled in a large impact crater.
Date acquired: July 15, 2011
Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington