This is a documentary on Hekla, one of Iceland's most active and infamous volcanoes, and its eruption in 1947. During the Middle Ages, Europeans called this volcano the "Gateway to Hell". The eruption started on 29 March 1947 and ended on 21 April 1948. It is likely that this was both the second greatest lava eruption of Hekla whilst Iceland was inhabited and the second greates...