Billy Goats Gruff is a Norwegian fairy tail that focuses on three male goats named Gruff (youngest, father, and grandfather). The goats are challenged with crossing a bridge as there was no grass left for them to eat where they live. As fate would have it, a fearsome troll lives under the bridge who wants to eat them. The youngest goat crosses the bridge, is threatened by the troll, but is spared his life as he states the other goats are larger and a better feast. The middle goat tries to cross the bridge and informs the troll that the eldest is a better feast, and is also allowed to cross. Finally, the eldest goat attempts to cross the bridge and when the troll comes out, the goat knocks the troll into the river with his horns. The bridge is now safe so do not fear geocacher.