 On 7 November 1956 , the Heron LN @-@ <unk> Lars crashed at Hummelfjell after the aircraft had experienced <unk> problems . The Hummelfjell Accident killed the pilot and one passenger , but the remaining ten people on board survived . Among them was the famous television actor Rolf <unk> , who , despite injury , succeeded at walking to civilization to inform about the accident . 
