Single frame enhanced NavCam image taken on 18 September 2016, when Rosetta was 12.1 km from the centre of the nucleus of Comet 67P/Churyumov-Gerasimenko. The scale at the surface is about 1.0 m/pixel and the image measures about 1.1 km across.
The original image and more information is available on the blog: CometWatch 18 September