Aliens And Ufo's TV Ancient Aliens Season 4 Tv Shows Ancient Aliens S04E02 – The Doomsday PropheciesTruthAdminFebruary 17, 2012May 22, 2019 by TruthAdminFebruary 17, 2012May 22, 2019028 Ancient Aliens S04E02 – The Doomsday Prophecies This episode looks at the Maya civilization and their advanced knowledge of mathematics and timekeeping. It presents theories...