Ripley crater on <a href="https://en.wikipedia.org/wiki/Charon_(moon)" class="extiw" title="w:Charon (moon)">Charon</a>.
NASA / Johns Hopkins University Applied Physics Laboratory / Southwest Research Institute
<a rel="nofollow" class="external free" href="http://photojournal.jpl.nasa.gov/catalog/PIA19967">http://photojournal.jpl.nasa.gov/catalog/PIA19967</a> (see also <a rel="nofollow" class="external free" href="http://www.nasa.gov/image-feature/charon-in-detail">http://www.nasa.gov/image-feature/charon-in-detail</a>)