[WitchdoctorDan]

Kay, can anyone explain this?

While working on a mountain that I've been tunneling through, I ran out of glass. I wandered out to go get some sand (it had been days since I went out). While heading towards the nearby desert, I came across this:











I swear I had no hand in building this. I don't know how this got here. I hadn't built any freestanding structures at all in this world. The structure does look like the windows I had been building in the mountain, very similar in layout to them, at least. Might this be a bug? Or some kind of world-splicing glitch? Or something else? :P