This is going to be the cover art for the ASOIF book series in France. Game Of Thrones is a TV series which has been created from the book series A Song Of Ice And Fire which has been written by American author George RR Martin. The TV series shares its name with the first book in the ASOIF series. A person with the username kjhatch has posted the picture in reddit and it seems he is the person who has created this cover art. He mentions that in France each of these books are cut into 3 parts and that the picture is the second part of A dance With Dragons.