Either way, Minecraft maps are allowable through a converter for an area of 512*512*64! Currently on there is a Salvezza map from way back, and here is a snap of it in action (Xesdra and I took down the temple).
For those unfamiliar with the game, and/or want to download the game package, http://www.ace-spades.com/. After you install it, head to the link and it will open up.