73 killed , many injured when the Norwegian mountainside crashes as they sleep . Two villages wiped out . 73 sleeping people half of them children , killed and many were injured when an avalanche of 6400 foot Haven mountain in Norway , comes into the lake Loen , carrying with it the side of the mountain . The two villages of Boedal and Nuesdal , on the side of the lake were razed to the ground as a great tidalwave raced when two thousands of tonnes of debris crashed into the water . Photo shows , searched the debris and retrieve bodies after the avalanche .. 14 September 1936