Satellites spot strange spiral markings in the remote African desert. A weird deadly black blob is threatening the Florida Keys. Something massive found deep beneath the ice of Antarctica. Just what on earth are they?
A satellite spots a set of huge arrows in the badlands of the American west. A blood red waterfall stains Antarctica’s snows. A plague of huge holes in the Siberian landscape. Just what on earth are they?
A sinister giant swastika appears in a forest in Germany. A strange pattern is etched into the desert near the famous Nazca lines, but archaeologists don't know who put it there. Mysterious markings are spotted in an isolated corner of Antarctica.