Gobekli Tepe (the name means "belly hill" in Turkish) has a gently rounded top that rises 50 feet above the surrounding landscape. To Schmidt's eye, the shape stood out. "Only man could have ...

Animal symbols, such as those used at Gobekli Tepe in modern day Turkey, represent star constellations in the night sky, and are used to mark dates and events such as comet strikes, analysis from ...