I like Herzog's work, but that's a really tricky one. Herzog only became involved after the film was completed, and then edited it down to make more salable. I liked Herzog's version, but I liked the original even more once I found it.

While Herzog certainly made it more popular, he lost a lot of accuracy by forcing it to tell the story he wanted it to tell. It certainly shook my faith in Herzog as a documentarian. He's a good artist, but you shouldn't trust him when it comes to facts.

The full original by Dmitri Vasyukov (Дмитрий Васюков) is available in four parts (one for each season) on Youtube. Here's the first quarter: https://www.youtube.com/watch?v=ttItxwzgbUs