Watch 123Movies. Lembusura, or the legend of the mountain demon. A rain of ash falls on Java. Kelud, a volcano located to this east of the Indonesian island, is active. As one of the island’s most dangerous mountains, it is known for violent and explosive eruptions. And when it rains ash, it pours. Time and again, everything gets covered in fine grey dust – houses, streets, blossoms and umbrellas. According to legend, the ash rain is caused by an angry demon named Lembusura who wears a magic hood and lives inside the volcano.