The Lykov family found in Siberia
In 1936 Karp Lykov, an Old Believer, fled into the Sayan taiga with his wife Akulina and two children after a communist patrol shot his brother. The family lived for more than forty years without contact, raised two more children in the forest, and was found by Soviet geologists in 1978 living in a single sooty hut on potatoes, rye and pine nuts. Within about three years of contact, three of the four grown children, Savin, Natalia and Dmitry, had died, and Agafia was left as the last survivor after Karp's death in 1988.