The project uses special user created software and mods to map out the entire world of Azeroth - dungeons and all.
Minecraft has been used to create some impressive sights, from the humble beginnings of 8-bit character recreation to more recent undertakings like set pieces from 'The Lord of the Rings'. The project undertaken by a user named Rumsey makes those look tiny by comparison.
Rumesy is recreating 'World of Warcrfaft' in 'Minecraft'. Not just some of it - all of it. Every continent, every city, and every dungeon. Rumsey has developed special software that takes architecture from 'Warcraft' and puts turns it into data for 'Minecraft.'
The continent of Kalimdor is nearly finished and Rumsey is working on the rest. Check out Rumsey's Imgur set to get a feel for how he's doing.