There's a fella in California who thinks he's cracked the Stonehenge question. That question, if you're not aware, is, "How the f-bomb did they make that thing by hand?!?!" No cranes, no lifts, no machinery of any kind, just pure human strength would have had to have made the glyphs, and they're several tons per stone.
But this California native is moving blocks that big (and things even bigger, like an entire barn) by hand. By himself. He's using nothing but gravity and wood, and forgotten technique. Maybe Sufjan should rewrite his song about Flint, MI to include this dude!