Avalon

This is the Fey land, the hardest to access area in all of the London Underground; entry requires the permission from a Legendary called the Lady of the Lake. Only through her can you find Avalon in the mists of the lake, otherwise it is said you could spend years trying to find your way in... or out. It is ruled by an ancient and incredibly powerful Fey named Morgana. Few beyond Arthur of Camelot know the extents of Morgana's power. It is said she controls the mists that surround the island, can make it's location change, and can even bring the dead back to life. What is known for certain is that seeking her out is supremely dangerous and the wise only do so in great hours of need.