This is a castle I've been working on. I t has a few interior rooms, but is still in progress. There is also a large mine shaft that travels down to about 3 or 4 blocks above bedrock, which took a while to mine. I'm expanding down there and building what is to be a city.

The whole .minecraft is up for download, including chocolate, plastic craft, and the baby animals mod.

I used mc edit to make the cavern, but buildings and such are built legit. The hole that leads from the castle with the lava was all mined by hand though.

Hope you enjoy :)