Fan-art
Oskar Zuchowski (PolishTank48)
This image was designed as poster for movie by Chrisopher Nolan "Inception", in which endless staircase appeared.
Artist's deviantART profile http://polishtank48.deviantart.com.
Paradox - Inception poster
The image was found at http://polishtank48.deviantart.com/art/Paradox-Inception-poster-v3-251413813