Going Deep

It's sometimes many levels down to get on the proper train and the escalators are so steep. I don't know know true it is, by I've heard that when the escalators are not working, the trains will not stop at those stations. I can believe this though. Having to climb up all these steps would be brutal! I can just imagine how bad it would be for children, the elderly or those with physical disabilities. I wonder just how deep these tunnels go..もっと詳しく