In 1998 an Australian Outback pilot flew over a remote portion of South Australia, and looking down, uncovered a shocking sight. What he saw was what came to be known as The Marree Man. An engraving in the arid earth, some 17 massive miles in perimeter. Who made it? How? And when and why? The Sweary Boys are on the case, this week, on The What If? Podcast.
