You can find out more about the real Keep of Dunnottar Castle at the following websites: https://en.wikipedia.org/wiki/Dunnottar_Castle http://www.bbc.co.uk/history/scottishhistory/darkages/trails_darkages_picts3.shtml http://www.castlesfortsbattles.co.uk/grampian/dunnottar_castle.html http://www.castlesandmanorhouses.com/page.php?key=Dunnottar%20Castle