Various artists
Ralph Maheno (StonedSmeagol)
This artwork was inspired by several artworks of Oscar Reutersvärd and M.C. Escher.
Artist's deviantART profile http://stonedsmeagol.deviantart.com.
To Fool The Eye
The image was found at http://stonedsmeagol.deviantart.com/art/TO-FOOL-THE-EYE-191586856.