The Island at the Top of the World

The name of this movie is The Island at the Top of the World released in 1974-01-01 and it's main theme is A Victorian gentleman hopes to find his long-lost son, who vanished whilst searching for a mysterious Viking community in a volcanic valley somewhere in uncharted Arctic regions. The gentleman puts together an expedition team to go on the search, but when they reach their destination they must escape from some Viking descendants who will kill to keep their existence a secret..