Home/Historic Film Locations/In search for the Holy Grail. Tomnadashan mine, a cave four miles (6.4 km) from the Perthshire village of Killin. Scotland Historic Film Locations In search for the Holy Grail. Tomnadashan mine, a cave four miles (6.4 km) from the Perthshire village of Killin. Scotland August 8, 2024 August 8, 2024 Facebook Twitter LinkedIn Tumblr Pinterest Reddit VKontakte Share via Email Print