Great Grimm Wall

The Great Grimm Wall in Dark Lands is the largest Wall on the whole world. It was first seen in the Fourth Beacon of Darkness.

Description
The wall is built all around the Dark Land, protecting the whole Shadow Kingdom. It is 25 meters wide, completely made of metal. Merlot's robots can be seen all over the world and guarding the 4 great doors.

History
The Great wall was built by Cedrin Hiyama and Nathaniel Vital with their semblances combined after Duncan decided to fortify the Dark Lands to be able to go into a war with the rest of the world. Dr Merlot also got a factory to mass product red and white robots to guard all the Shadow Kingdom and over all the Great Wall.

The only outsiders allowed through the 4 great doors are the members in the Fallen Fang, Reborn, Covenant and Hot Road. But there are few exceptions in the case it is a direct invitation made by one of the five Beacons.