Yesterday, a Minecraft builder released photos and details about the completion of a latest project: replicating the Mines of Moria (where Gandalf faces the Balrog) at a 1:1 scale. A team of more than 40 volunteers hand-dug Moria within the Minecraft game system.
As reported in Geekosystem.com:
The structure is 16,000 x 16,000 blocks and took tens of thousands of man hours to complete. The entirety of the structure was “Hand-Dug,” which mean that no mods were used to simplify the building process within Minecraft. The replica is based on Peter Jackson’s vision of Moria and not J. R. R. Tolkien’s description. The replica features all of the iconic locales featured in the film; with everything from the entrance to the bridge on which Gandalf confronts the Balrog.
According to comments on the original post, the effort took 10,000's of man hours to complete. You can view a video tour of the Minecraft Moria replica through the video alongside this post.
The team has also been responsible for several other large-scale Minecraft replicas, including a recreation of the Bismark, a German WWII battleship, and several Roman buildings.
At this time, the map for the Mines of Moria replica is not available for download, considering it would require 2-3 days just for the team to upload it.