Today at Sultan Tipu's fort, I explored the dungeon where he locked up British soldiers, who then got blasted by their own troops when general Cornwallis attached. Notice the openings in the walls that once had big cannons in them. The Sultan thought they were coming from the east, but the British really came from the south. And when the Sultan came back into the fort he found the British already there because a trusted minister was a traitor and had let them in.