There's this photo that keeps popping up, most typically in the "Suggested Articles" section on various news sites (you know, the section where all the linked "articles" are actually from external sites and basically just ads):
In context, the photo can be found in on sites using 'Sponsored Links by Taboola', where it presents alongside other outbound links, like this:
The caption that accompanies the photo is always "20 Rare Historical Photos Declassified", however if you click it (yep, I clicked it even knowing it's probably an ad...because I really want to know what the story is behind this particular photo) the article that you're taken to does not display or mention the photo at all.
(I've also seen a smaller instance of the same photo in 'Outbrain' links, however I haven't been able to get that one to reappear yet. Will grab it and append if/when it pops up again.)
Is this a photo that used to be classified? I wonder if it is just click-bait, perhaps lifted from an old horror movie or something similar (or just plain photoshopped into existence).