A Stone Age site where cave rituals may have been performed some 9,000 years ago has been discovered on Blå Jungfrun an island off the east coast of Sweden. The island has long been associated with tales of witchcraft, curses and supernatural powers. According to a centuries-old legend, witches gather every Easter on the island to worship the devil. Curses have also been associated with the island. For instance, those who remove a rock from the site are said to endure a lifetime of bad luck.