The Tangle Maze is like a hedge maze, like the ones seen in gardens of mansions garden only much more deadly. The Maze is composed of these blocks that look like black roots with purple thorns. They can prick you like a cactus but unlike a cactus these will not only damage you (like half a heart) but will also teleport you to a random location. It would spawn in a new biome called The Tangle. Link Here: The Tangle (New end Biome)
After navigating the maze you must face off against a new mob, The Banshee, guarding the chest in the center of the maze. The reward would be an item that can be used to tame one of The Banshee. Link here for more info: The Banshee (A new End Mob)
Remember to Vote if you'd like to see The Tangle Maze implemented into the Fan Update!