uesp:Did You Know: When Dagoth Ur returned, instead of dealing with the situation, Vivec and the T
uesp: Did You Know: When Dagoth Ur returned, instead of dealing with the situation, Vivec and the Tribunal instead just put up a wall around their primary base of operations? The Ghostfence, as the wall was named, was immediately circumvented by digging a tunnel underneath it, flying, levitation, and teleportation. Additionally, the wall itself was constructed out of the remains of the Dunmeri dead, to take advantage of the spiritual energy from the corpses. -- source link