Hidden beneath Oklahoma’s white salt flats lies a crystal found nowhere else on Earth that people can dig up for free
At first glance, the enormous white plains stretching across northern Oklahoma look almost otherworldly, resembling a frozen lake or snow-covered desert under the blazing sun. But hidden just beneath the salty surface of the Great Salt Plains lies one of the rarest geological treasures in the world: hourglass selenite crystals. Found naturally only in this…