"Who is tripping on my bridge?"
The three billy goats gruff is a short folk tale about three goats on their way to summer pasture. There are several variants of the adventure. It was first published in the book Norsk Folkeeventyr in 1843 by Peter Christen Asbjørnsen and Jørgen Moe.
In the adventure, three goats - one small, one medium and one large - are on their way to the setra. On the way, they are threatened by a troll under a bridge. The troll is eventually pushed into the waterfall and all the goats make it safely across.
You can use this diorama as either a bookend or as decoration.