https://www.thevintagenews.com/2016/10/31/a-russian-family-was-isolated-for-more-than-40-years-completely-unaware-of-ww2/
https://www.inquisitr.com/501864/russian-family-live-in-the-wilderness-no-human-contact-for-40-years/
https://www.smithsonianmag.com/history/for-40-years-this-russian-family-was-cut-off-from-all-human-contact-unaware-of-world-war-ii-7354256/