Very artistic photo, the perspective looks good. Seems composed too narrow to me, I'd like to see more width to see the full tunnel or at least all of the escalator.
I really like this photo. The lighting is perfect. Moody and interesting, casting shadows in all the right places. Taken probably mid day? I like how outside, it's extremely bright, and some of that light is spilling through on the reflection on the metal about 1/4 of the way down. My eye is drawn initially to the opening at the top, and led down the escalator to the very bottom. Very effective use of perspective to create motion in a somewhat stationary object. (The stairs move, but we can't see them, but movement is implied anyways).