It reminds me of the EV compensation button on my Nikon, Jarmo. On one side, over exposed, empty, and the other, dark and full of stuff. Two views of the same place, with a distinct division as though it's a fence or some sort of transformation zone. The effect is quite mesmerizing and haunting. 'another world. Enter at your own risk' the diagonal gives it added strength.
As usual, beautifully done.
Cheers
Tom