That this is a five story high blood red waterfall oozing out of a glacier isn't even the strangest bit.
The strangest bit is what the blood red goo is made of. It is an ancient community of microbes, sealed off from the rest of the world by ice for the last two million years. "Evolving independently of the rest of the living world, these microbes existed without heat, light, or oxygen, and are essentially the definition of 'primordial ooze.'" A high iron content is what lends it the blood red color. That, or, you know, loathsome blood-devouring demons lurking under the crust of the Earth. You make the call.
The gunk is coming out of the Taylor Glacier in Antarctica. The photo, and the accompanying facts, are from my new favorite web site, Atlas Obscura.