While we were expanding the size of the hole in this habitat to make room for more air dragons, we accidentally knocked the ledge off into the blowhole. Fortunately, the wind is powerful enough that it keeps the rock afloat! So there you have it, a floating island! The best part is that, as far as we can tell, the island is surprisingly stable over the chasm, so there's probably little danger that it will ever float off or crash into the rest of your island.