The first of the very popular Karl May films of the sixties in Germany is at the same time really embarrassing and touching with its simple good vs. evil plot. A German Western, shot at location in oops, Yugoslavia, is surely strange, but if Italian Western movies have their charme why not German?
Winnetou and Old Shatterhand as played by Bierce and Barker have shaped our image of the way heroes have to look and behave. Götz George, arguably the best living German actor, plays one of his early roles and you can see that he is taking it not really seriously.
I recently tried to watch it when it was on TV on prime time. There is a treasure somewhere in the "silver lake" and evil guys trying to steel the plan. Nothing really spectacular. But good supporting cast. It is really only endurable on a Sunday afternoon when you are relaxed and can enjoy the haunting film score. It helps to have read the books which are very popular in Germany. A perfect example of how the mood of a book can be recaptured with a movie. In fact one of my teachers said that the Karl May films were the only examples of films that come close to the literature that they are based on. And that only because the books are not worth much. It is not true really. There are other examples like...hm, Name of the Rose?