The Trolls

I put the Trolls after "Rivendell" because, like I said, Rivendell is also from the Second Age.
Tolkien decided to do a black and white drawing. I don't remember in the same style than who, but it 'copied' the way of an artist.
Anyway, that is the other "out of colors" in the hanging wall.

It's the moment of the first adventure of Bilbo and the Dwarves, before they reach Rivendell. In the foreground, you have the cap of one of the Dwarves, before the Trolls capture them all.