The opening card explains the film. Overlaying a map of Switzerland, the words "For centuries people have climbed the trails to Echo Mountain to be thrilled by nature's magic - the answering... Read allThe opening card explains the film. Overlaying a map of Switzerland, the words "For centuries people have climbed the trails to Echo Mountain to be thrilled by nature's magic - the answering echoes of their own voices."The opening card explains the film. Overlaying a map of Switzerland, the words "For centuries people have climbed the trails to Echo Mountain to be thrilled by nature's magic - the answering echoes of their own voices."