Known as the nightmare artist, Zdzislaw Beksinski, a polish painter and photographer, is famous for his horrifying works, all of which have no official title. Despite the hellish landscapes that he imagined, he was of sound mind and had no history of mental illness or emotional instability, which only adds to the oddity as he would have no deeper inspiration for what he painted other than what his soul told him to paint.
Looks like Wayne Barlowe's Inferno pieces, love it