So I was wandering around the town of Winterfell until I saw what looked like a TNT cannon out of the corner of my eye. When I went to look at it, sure enough it was a TNT cannon. Since the picture is "too big" for some reason, I'll put a brief description: The cannon is made out of stone brick and is on water next to the dock right outside of the town's protective boundary. It's about 3-4 blocks off the ground. If you want to see it, it's in Winterfell remained untouched.
If you see anybody suspicious roaming around Winterfell, please list down names down below. Thanks!
-Ben and Berry