Duncanthrax built the Glass Maze on a whim, located underground near Egreth Castle, just off the western branch of the Great Underground Highway, in order to amuse his friends, and torture his enemies. It is a labyrinth of 27 cubicles, full of pitfalls. The entrance to the Glass Maze was a magnificent Hall, graced with a wonderful statue of King Duncanthrax himself. The base of this statue was engraved with the words: "I, Duncanthrax, King of Quendor and all its subjugated outlands, invite you to sample the delights of my Glass Labyrinth."