Russian Hermit Family In Siberia-True or False?

Years ago, the tabloid press carried a story about a family found living in a remote part of Siberia. Supposedly, these people had been out of touch with the world for 70+ years-what I remember was that they were religious dissenters, who left their village and moved into a remote area. they w did this before WWII-and were found recently.
Was this story true? Could you actually stay hidden in the old USSR?

These guys?

Seems pretty reputable to me.

Yep. One is still alive, 70 years old:

(source)

We had a thread on this a while back; I remember because I had watched the whole Russian documentary on the family and I think I or someone else posted a link to that in the thread.

Might as well post a link to the documentary here, too. Fascinating story.