A Ring of Wrinkle Ridges
Within Mercury's vast northern volcanic plains, compressional deformation is commonly localized by impact craters that were buried beneath lava flows. Today's image highlights one of these buried "ghost" craters, where only this convergence of tectonic features (a wrinkle-ridge ring) hints at the presence of the hidden crater.
Date acquired: August 02, 2011
Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington