The underground heart of Rome’s Colosseum, a labyrinth of passageways and chambers called the hypogeum, has opened to the public fully following an extensive restoration https://www.wantedinrome.com/news/colosseum-underground-labyrinth-opens-fully-to-visitors.html
@estherschindler neat, I would love to see that, it was cool when they had that fight there in that movie Jumper with that Whiney guy that was in Star Wars.