"Most Isolated Man on Planet"
Surprisingly, after having taken (and continually retaken) the Portuguese course, I was able to comprehend most of a fascinating, elegantly written Portuguese article that I just discovered online. It's about a real-life mysterious yet sympathetic figure, whose sad story would ultimately cast light on our human and environmental condition in a timely and tragically poetic way. (Article and relevant material linked below.)
I'm talking about "Indio do Buraco," as he's been nicknamed in Brazil, aka "Man of the Hole" in English. He's apparently the sole surviving member of an "uncontacted," enigmatic Amazon tribe, living by himself in the Brazilian jungle in the wake of massacres by ranchers, loggers and/or other supposedly civilized ilk. Perhaps in his 50s now, the forlorn soul has been known about publically all the way back to 1997.
I myself have learned of him before coming across the article, and even before he made some press being secretly filmed chopping a tree last year, a news story with which you might be familiar (again, video linked below). In any case, what prompted me to look up the solitary aboriginal this time, I can't recall off the top, but with multiple Brazilian wildfires making the latest headlines, let's hope he's hanging in there amid that arguably manmade disaster. And may the wary loner's rainforest living space continue to be legally set aside and successfully protected for him as it has since 2007.
Left alone in their territory, per their wishes, he and the world's other remaining "unreached," more-or-less uncontacted peoples, such as the North Sentinelese Islanders, would be preserving remaining patches if Eden, if you will, for the good of everyone and everything as a collective whole. You probably remember the islanders (if not by name), the planet's most isolated society, from widespread dramatic news of the recent killing of John Allen Chau under quite unfortunate yet completely avoidable circumstances (another link below).
Returning to linguistics specifically, nothing is externally known about the respective languages of the Hole Man's genocided tribe, the North Sentinelese and probably the approximately 100 so-called uncontacted tribes or whatnot. However, for all the value such tongues might hold to outsiders, we language enthusiasts should probably respect them as sacred mysteries, secrets to by kept by their native speakers living in a relative yet necessarily secluded state of nature. So many languages of other endangered peoples and cultures to focus on as it is, and urgently!
(1) Portuguese article: http://varievo.com/interessante/conheca-o-indio-do-buraco-o-homem-mais-isolado-no-planeta
(2) Related English Wikipedia entry: https://en.wikipedia.org/wiki/Man_of_the_Hole
(3) Corroborating Survival International webpage: https://www.survivalinternational.org/articles/3105-the-last-of-his-tribe
(4) Guardian video: https://youtu.be/bsXj15ECoCU
(5) Wikipedia entry re North Sentinelese (including death of John Allen Chau): https://en.wikipedia.org/wiki/Sentinelese
(6) Wikipedia entry re "uncontacted" peoples: https://en.wikipedia.org/wiki/Uncontacted_peoples