An eerie graveyard within the walls of Edinburgh Castle, with ancient tombstones

An eerie graveyard within the walls of Edinburgh Castle, with ancient tombstones covered in moss and fog swirling around them. The graves are uneven and cracked, some with faint ghostly apparitions hovering above them. In the distance, the silhouette of the castle looms, adding to the sinister atmosphere. The scene should evoke a sense of deep, hidden secrets buried within the castle’s history.”