Nephilim is the Hebrew name given to giants of the Earth, believed to be a primitive species inhabiting the planet from the Middle East to North America. Mentioned in the Bible, known for their enormous height, evidence of these beings has been unearthed all over the globe, an in particular the Ohio Valley of North America. Comparative anatomy suggests an entirely difference species than our own–double rows of teeth, thick skulls, huge jawbones–and their cultural organization, religious worship, and building of great “henges” isn’t understood to this day. Are they human, a dead-end offshoot of our own species like Neanderthals, or are they an integral part of our evolutionary history? Perhaps they’re not from this planet at all, but brief visitors, never to be seen again, or only briefly seen by a select few at certain times.