On the fourth loop, he decided to return to Hogwarts. Nothing had changed there, of course: the same miserable students and professors gathered in the Great Hall, the same traces of explosions and battles, the same undying flames...Harry walked through the destroyed inner courtyard and felt as if he were living a long-forgotten dream. He couldn’t and didn’t want to regain his sense of reality: the images that took form before him were so horrific that he already regretted setting foot on the castle’s threshold.