Blood Falls is already one of the strangest landmarks in the world. Instead, researchers eventually discovered that the 'blood' comes from an ancient reservoir of hypersaline water trapped beneath Taylor Glacier. When the ancient seawater first became trapped beneath Taylor Glacier, Antarctica was a very different place. Yet somehow, descendants of that ancient marine community appear to have weathered the transformation. Together, those strategies may have allowed an ancient marine community to persist while Antarctica itself changed almost beyond recognition.