Update..thanks to Torontopoika for the comment that provided the name of the place
its the… beautiful train track is naturally covered by green trees and makes a tunnel. Located in Kleven, Ukraine, this train tunnel is named as” “Tunnel of Love” by local people. These incredible photos were taken by Oleg Gordienko
Narnia?
No idea, tried to find out where this is, the best I find was that it with posted on tumblr many times under amazing walks
Tunnel Of Love in Klevan Ukraine, I think.