A lone island in an endless ocean. Perfectly flat in the center, with mountains on the rim that obscure anything that you build from the outside, as well as being impossible to climb (no flying over, you cheater!)

The only structure is a lighthouse outside of the island by a dock. Near the lighthouse is a secret passage which will allow you to access the inside of the island without flying or building over the mountain range.

The island has over 35000 square meters of building space. I figured that I'd put the empty version on here, in the event that somebody else wanted a similar island for themselves. Enjoy!