Hay un lugar llamada Opal Cave en Australia.
Todos los lugares del mundo llamados "Opal Cave".
Gladstone (5)
Hamilton (5)
Kingston (5)
Rosedale (4)
Richmond (4)
Gordon (4)
Windsor (4)
Newstead (4)
Cremorne (4)
Springfield (4)
Darlington (4)
Woodstock (4)
Middleton (3)
Warburton (3)
Williamstown (3)
Black Springs (3)
Flinders (3)
Huntly (3)
Sassafras (3)
Somerton (3)
Wattle Flat (3)
Auburn (3)
Clarendon (3)
Derby (3)
Epping (3)
Georgetown (3)
Melrose (3)
Bangor (3)
Rosebery (3)
Waterloo (3)