I made this based on book "Harry Potter and the Half Blood Prince" chapter 27, the Lightning-Struck Tower. They're Madam Rosmerta, Harry Potter and Dumbledore. The were in Hogsmeade. Dumbledore's hurt and they're trying to go back to Hogwarts. Then, they saw Madam Rosmerta with her silk dressing-gown embroided with dragon. And she realised that the Dark mark hanging in the sky above the Astronomy Tower, the highest of the castle. It's the blazing green skull with a serpent tongue. Hope you like it !