Season
- Season 0 2009-03-08
- Season 1 2010-04-20
- Season 2 2010-10-28
- Season 3 2011-07-28
- Season 4 2012-02-17
- Season 5 2012-12-21
- Season 6 2013-09-30
- Season 7 2014-01-24
- Season 8 2014-06-13
- Season 9 2014-10-31
- Season 10 2015-07-24
- Season 11 2016-05-06
- Season 12 2017-04-28
- Season 13 2018-04-27
- Season 14 2019-05-31
- Season 15 2020-01-25
- Season 16 2020-11-13
- Season 17 2021-08-06
- Season 18 2022-01-07
- Season 19 2023-01-06
- Season 20 2024-01-05
- Season 21 2025-02-07
Season 21 Episode
- Season 12 The Alien Hunters
- Season 12 Forged by the Gods
- Season 12 The Mystery of Rudloe Manor
- Season 12 The Alien Architects
- Season 12 The Pharaohs' Curse
- Season 12 The Science Wars
- Season 12 City of the Gods
- Season 12 The Alien Frequency
- Season 12 The Majestic Twelve
- Season 12 The Akashic Record
- Season 12 Voices of the Gods
- Season 12 The Animal Agenda
- Season 12 The Replicants
- Season 12 A Spaceship Made of Stone
- Season 12 The Alien Disks
- Season 12 Return to Gobekli Tepe
Ancient Aliens - Season 12 Episode 16 Return to Gobekli Tepe
7.00 42 minutes The ancient site of Gobekli Tepe challenges everything modern archaeologists believe about mankind's past. The megalithic stone complex was built over 12,000 years ago, which dates it to 6,500 years before Stonehenge, and 5,000 years before the first known civilization was said to have emerged in Mesopotamia. Mainstream archaeologists believe that humans were roaming the Earth as simple hunter-gatherers at this time, but if so, how could they have built such incredible structures? Might they have had help from a more advanced - perhaps extraterrestrial - civilization? According to Ancient Astronaut Theorists, the site serves as the smoking gun for a lost civilization - one whose survivors may have built the site to preserve important information about otherworldly visitors. Does the site offers clues about our extraterrestrial past that the ancients felt compelled to preserve for future generations?
