There is no shortage of theories exploring how these monoliths were constructed- from the Creator-god to aliens and giants. This programmme chronicles University of Pennsylvania researcher Alexei Vranich's expedition to prove his theory of how the American Stonehenge was created: that the stones were transported across Lake Titicaca on gigantic totora reed boats and then laboriously dragged another 10 kilometers to the city. 

To pull off this feat, Alexei enlists the help of Paul Harmon, a world-class sailor and adventurer. Follow their perilous mission from beginning to end – from the initial enthusiasm to the roadblocks thrown in their path, from the joy of their immersion deep into Bolivian culture to the challenging road to their ultimate success.