Doesn't show anything?? Are you joking?
That soundtrack! I hope to God that is the audio for this ride, has a really good vibe towards it.. plus that spinning room/camera?? What could that be? There is definitely something about this ride that we don't know, that trailer brings so much hype! I suspect we will be receiving an advert sooner than we think! I'm so excited now for this ride!
EDIT: freeze the video at 0:15.. looks to be entering a tunnel, preferably the last tunnel at a slow speed.. hard to tell to be honest but you can see the structure of the entrance for a split second.
freeze at 0:20:25 you can see something which looks like a box of some form, or an entrance/exit.. different to the wood, and if you freeze at 0:20:75 (or so) you can see a green light, which looks to be a fire exit sign.. might just be me.