Monsters of Rock was an annual hard rock/heavy metal music festival in England held every August at the Castle Donington racetrack from 1980 - 1996. Bands such as Hawkwind, Dio, Iron Maiden, AC/DC, Ozzy Osbourne, Rainbow, Slade, Saxon, Whitesnake, Meatloaf, Mötley Crüe, Metallica, Bon Jovi, Anthrax, W.A.S.P., Megadeath, Guns n' Roses, Kiss and many more have walked and played on its hallowed stage.