AskWazzup
Sonny, I Watched the Vault Bein' Built!
Single frame enhanced NavCam image taken on 25 June 2016, when Rosetta was about 16.7 km from the centre of the nucleus of Comet 67P/Churyumov-Gerasimenko. The average scale is 1.4 m/pixel and the image measures about 1.5 km across.
I'd figure those rocks around the center of the picture are about the size of a medium plane~
OSIRIS narrow-angle camera image taken on 6 June 2016, when Rosetta was 22.9 km from the centre of Comet 67P/Churyumov–Gerasimenko. The scale is 0.40 m/pixel at the comet and the image measures about 820 m..
OSIRIS narrow-angle camera image taken on 1 June 2016, when Rosetta was 20 km from the centre of Comet 67P/Churyumov–Gerasimenko. The scale is 0.36 m/pixel at the comet.