Inspired by Gatester's farms and Wrangeline's bay-of-torches:
Coming out of my hideyhole
Inside my treefarm
Overviewing my caveprotector/housethingie from the treefarm, notice how it's connected to the rock - I can go there through my hideyhole. Below it is a giant natural cave, which I can safely farm in.
Ah, and of course, viewed from the treefarm's entrance my original hideyhole. Let me tell you it's a bad idea to make the main entrance to your home under a rock like that, because the creeps don't automatically die when it's day - lack of sunlight. In combination with a door, it does have very good farming potential (you can hit creeps through the door, while they can't hit you). Hoping the sapling to the left will grow into a tree eventually.. would look good.