Another amazing picture from Rosetta of Comet 67P Churyumov–Gerasimenko. This one shows the cliffs rising over the boulders.
Funnily enough, this image reminded me of an Astounding Science Fiction magazine cover picture from decades ago. This being the Internet Age, I actually found it. The picture was to illustrate the story "The Dueling Machine" by Ben Bova and Myron R. Lewis.
Again, this being the Internet Age, the actual short story is available for free to read.
And to top this all off, the story includes a duel (basically in an immersive virtual environment written about in the 1950s!) on a low-gravity asteroid very similar to what it would be like on Comet 67P.