Single frame enhanced NavCam image taken on 22 August 2016, when Rosetta was 6.8 km from the centre of the nucleus of Comet 67P/Churyumov-Gerasimenko. The scale at the surface is about 0.5 m/pixel and the image measures about 500 m across.
The original image and more information is available on the blog: CometWatch 22 August