Fahim,
I've been fascinated by this picture since you posted it as it reminded me of a photograph I'd seen before. Here it is.
Walt Conley: Abandoned Doorfrom the OPF collection of doors in Themes, here
Here the door in a Scottish castle, abandoned against the wall and light from a high window set a long shadow on the wall.
In both, the subject seems to be in a dungeon. The door indicating a passage from one part of life to another and the wheel suggesting a journey are broken down and they are only reminders of how temporary we are against time and the lifeless rocks that make up the universe.
Asher