: Hancock questions if simple hunter-gatherers could have built such advanced structures and suggests civilization may have been "rebooted" by survivors of a lost advanced culture after the last Ice Age.
: Exploring underground "bunker" cities in Turkey.
: A different series where "Season 1, Episode 5" is titled " Gathering Medicine " and features herbalist Sage LaPena .
: Host Graham Hancock explores this site, which is considered the oldest known megalith in the world.