It's absolutely astonishing to me that there could still be people out there, even in what's termed wilderness, who have never encountered the modernities of the society we inhabit - that for an all but unknown few the world is still just what lies outside their front door. I feel true sadness for the Lykov's, being 'discovered', then somewhat forced by the intrusion of others to be aware of their greater surrounding…
There is also at least one tribe in South America that has never been contacted by the outside world. http://www.uncontactedtribes.org/brazilfootage
Perhaps more interesting is the case of the Sentinelese, who live on islands in the bay of bengal, and may have had literally no spoken contact with outsiders in hundreds of years: