Below is a spectacular simulated view (compiled from several individual images) showing the Tombaugh Regio area to the north and the dark, heavily-cratered terrain to its south. These craters are prominent because of their bright rims, which could be nitrogen frost. What catches my attention in particular on this image are the curved and branching fractures that sweep across the terrain in the lower left and slice through several of the smaller craters, providing evidence of an episode of geological activity, maybe even within the past billion years.