Ancient Aliens - Season 2 Episode 4 Underground Aliens
Season - Episode
22
Season 22 Jan 15, 2026
-
22 - 1Skulls of the Gods Jan 15, 2026 -
22 - 2Egypt's Lost Pyramids Jan 22, 2026 -
22 - 3Island of the Gods Jan 29, 2026 -
22 - 4Extraterrestrial Engineering Feb 05, 2026 -
22 - 5UFO Hot Spots Feb 26, 2026 -
22 - 6Mysterious Monuments Mar 05, 2026
21
Season 21 Feb 07, 2025
-
21 - 1The Top Ten Extraordinary Discoveries Feb 07, 2025 -
21 - 2The Top Ten Mysterious Monoliths Feb 14, 2025 -
21 - 3The Top Ten UFO Crashes Feb 21, 2025 -
21 - 4The Top Ten Unexplained Technologies Feb 28, 2025 -
21 - 5The Top Ten Secret Projects Mar 07, 2025 -
21 - 6The Top Ten Mysterious Mountains Mar 14, 2025 -
21 - 7Mysteries of the Aztecs Mar 21, 2025 -
21 - 8The Glowing Orb Phenomenon Mar 28, 2025 -
21 - 9The Legacy of J. Allen Hynek Aug 29, 2025 -
21 - 10The Volcano Factor Sep 05, 2025 -
21 - 11The Birdman Mystery Sep 12, 2025 -
21 - 12The Abduction Files Sep 19, 2025 -
21 - 13The Giants Oct 02, 2025 -
21 - 14Aliens In Our Midst Oct 09, 2025 -
21 - 15Britain's UFO Files Oct 16, 2025 -
21 - 16Mysteries Of The Norse Gods Oct 23, 2025 -
21 - 17Secrets of Japan Nov 06, 2025 -
21 - 18Episode 18 Jan 01, 1970 -
21 - 19Episode 19 Jan 01, 1970
-
21 - 20Episode 20 Jan 01, 1970
20
Season 20 Jan 05, 2024
-
20 - 1The Top Ten Alien Influencers Jan 05, 2024 -
20 - 2The Top Ten Extraordinary Creatures Jan 12, 2024 -
20 - 3The Top Ten Hidden Alien Bases Jan 19, 2024 -
20 - 4The Top Ten Scariest Encounters Feb 02, 2024 -
20 - 5The Top Ten Alien Codes Feb 09, 2024 -
20 - 6The Top Ten Alien Disasters Feb 16, 2024 -
20 - 7Secrets Of The Sumerians Feb 23, 2024 -
20 - 8The UFO Superhighway Mar 01, 2024 -
20 - 9Mysteries of Scotland Mar 08, 2024 -
20 - 10Mystery of the Stone Spheres Mar 15, 2024 -
20 - 11Mysteries of the Maya Jun 28, 2024 -
20 - 12Unlocking the Stargates Jul 05, 2024 -
20 - 13The Whistleblowers Jul 12, 2024 -
20 - 14The Search For Extraterrestrial Intelligence Jul 19, 2024 -
20 - 15Jacques Vallée: UFO Pioneer Aug 09, 2024 -
20 - 16The Teachers Aug 16, 2024 -
20 - 17Egypt's Giant Tombs Aug 23, 2024 -
20 - 18The Linda Moulton Howe Files Aug 30, 2024 -
20 - 19The Chosen Sep 06, 2024 -
20 - 20Resurrecting Puma Punku Sep 13, 2024
19
Season 19 Jan 06, 2023
-
19 - 1The Hotspot Connection Jan 06, 2023 -
19 - 2The Crop Circle Code Jan 13, 2023 -
19 - 3Mystery of the Lost Civilization Jan 20, 2023 -
19 - 4The Power of the Obelisks Feb 03, 2023 -
19 - 5The MUFON Files Feb 10, 2023 -
19 - 6Cosmic Impacts Feb 17, 2023 -
19 - 7Close Encounters of the Fifth Kind Feb 24, 2023 -
19 - 8The Mysteries of Alaska Mar 03, 2023 -
19 - 9Aliens in our Airspace Mar 10, 2023 -
19 - 10The Giants of Malta Mar 17, 2023 -
19 - 11The Top Ten Pyramid Sites Jun 30, 2023 -
19 - 12The Top Ten Mysterious Devices Jul 07, 2023 -
19 - 13The Top Ten Mysterious Islands Jul 14, 2023 -
19 - 14The Top Ten Alien Craft Jul 21, 2023 -
19 - 15Edgar Cayce: The Sleeping Prophet Aug 04, 2023 -
19 - 16The Gods of Greece Aug 11, 2023 -
19 - 17The New UFO Hunters Aug 18, 2023 -
19 - 18Power of the Talisman Aug 25, 2023 -
19 - 19The Top Ten Mysteries of the Deep Sep 08, 2023 -
19 - 20The Top Ten Alien Petroglyphs Sep 15, 2023
18
Season 18 Jan 07, 2022
-
18 - 1The Disclosure Event Jan 07, 2022 -
18 - 2Mystery of the Standing Stones Jan 14, 2022 -
18 - 3Beneath the Sacred Temples Jan 21, 2022 -
18 - 4The World on Alert Jan 28, 2022 -
18 - 5Recovering The Ark Of The Covenant Feb 11, 2022 -
18 - 6Secrets Of The Star Ancestors Feb 18, 2022 -
18 - 7Alien Air Force Feb 25, 2022 -
18 - 8The Shadow People Mar 04, 2022 -
18 - 9Decoding the Dragon Gods Mar 11, 2022 -
18 - 10The Time Benders Mar 18, 2022 -
18 - 11Ancient Aliens On Location: Incredible Structures Jul 08, 2022 -
18 - 12Ancient Aliens On Location: Extraordinary Encounters Jul 15, 2022 -
18 - 13Ancient Aliens on Location: The Alien Glyphs Jul 22, 2022 -
18 - 14Ancient Aliens On Location: The UFO Investigations Jul 29, 2022 -
18 - 15Ancient Aliens On Location: Mysterious Artifacts Aug 05, 2022 -
18 - 16Ancient Aliens on Location: Evidence of Alien Life Aug 12, 2022 -
18 - 17The Shining Ones Aug 19, 2022 -
18 - 18The Journey to Immortality Aug 26, 2022 -
18 - 19Secrets of Inner Earth Sep 09, 2022 -
18 - 20Return of the Egyptian Gods Sep 16, 2022
17
Season 17 Aug 06, 2021
-
17 - 1The Lost City of Peru Aug 06, 2021 -
17 - 2Top Ten Mysterious Sites Aug 13, 2021 -
17 - 3Top Ten Alien Cover-Ups Aug 20, 2021 -
17 - 4The Mystery of Mount Shasta Sep 17, 2021 -
17 - 5The Human Experiment Sep 24, 2021 -
17 - 6Top Ten Alien Encounters Oct 01, 2021 -
17 - 7Top Ten Alien Artifacts Oct 08, 2021
16
Season 16 Nov 13, 2020
-
16 - 1The Divine Number Nov 13, 2020 -
16 - 2The Lost Kingdom Nov 20, 2020 -
16 - 3The Galactic Keyhole Dec 04, 2020 -
16 - 4Giants of the Mediterranean Dec 11, 2020 -
16 - 5The Forbidden Bible Dec 18, 2020 -
16 - 6William Shatner Meets Ancient Aliens Feb 12, 2021 -
16 - 7Impossible Artifacts Feb 19, 2021 -
16 - 8The Space Travelers Feb 26, 2021 -
16 - 9The UFO Pioneers Mar 05, 2021 -
16 - 10The Harmonic Code Mar 12, 2021
15
Season 15 Jan 25, 2020
-
15 - 1The Mystery of Nan Madol Jan 25, 2020 -
15 - 2The Relics of Roswell Feb 01, 2020 -
15 - 3Destination Chile Feb 08, 2020 -
15 - 4The Real Men in Black Feb 15, 2020 -
15 - 5The Mystery of the Stone Giants Feb 22, 2020 -
15 - 6The World Before Time Feb 29, 2020 -
15 - 7They Came from The Pleiades Mar 07, 2020 -
15 - 8The Immortality Machine Mar 14, 2020 -
15 - 9The Shapeshifters Mar 21, 2020 -
15 - 10The Mystery of Skinwalker Ranch Mar 28, 2020 -
15 - 11The Ultimate Guide to UFOs Apr 11, 2020 -
15 - 12Aliens and the Presidents Apr 18, 2020
14
Season 14 May 31, 2019
-
14 - 1Return to Antarctica May 31, 2019 -
14 - 2The Badlands Guardian Jun 07, 2019 -
14 - 3Element 115 Jun 14, 2019 -
14 - 4The Star Gods of Sirius Jun 21, 2019 -
14 - 5They Came from the Sea Jun 28, 2019 -
14 - 6Secrets of the Maya Jul 05, 2019 -
14 - 7The Druid Connection Jul 19, 2019 -
14 - 8The Reptilian Agenda Jul 26, 2019 -
14 - 9The Alien Infection Aug 02, 2019 -
14 - 10Project Hybrid Aug 09, 2019 -
14 - 11The Trans-Dimensionals Aug 16, 2019 -
14 - 12Islands of Fire Aug 23, 2019 -
14 - 13The Constellation Code Aug 30, 2019 -
14 - 14The Nuclear Agenda Sep 06, 2019 -
14 - 15The Alien Mountain Oct 04, 2019 -
14 - 16The Alien Brain Oct 11, 2019 -
14 - 17The Secrets of Stonehenge Oct 18, 2019 -
14 - 18Food of the Gods Nov 01, 2019 -
14 - 19Human Hieroglyphs Nov 08, 2019 -
14 - 20The Storming of Area 51 Nov 15, 2019 -
14 - 21Countdown to Disclosure Nov 22, 2019 -
14 - 22Secrets of the Exoplanets Nov 29, 2019
13
Season 13 Apr 27, 2018
-
13 - 1The UFO Conspiracy Apr 27, 2018 -
13 - 2Da Vinci's Forbidden Codes May 04, 2018 -
13 - 3The Alien Protocols May 11, 2018 -
13 - 4Earth's Black Holes May 18, 2018 -
13 - 5The Desert Codes May 25, 2018 -
13 - 6Area 52 Jun 01, 2018 -
13 - 7Earth Station Egypt Jul 20, 2018 -
13 - 8Island of the Giants Jul 27, 2018 -
13 - 9The Taken Aug 03, 2018 -
13 - 10The Sentinels Aug 10, 2018 -
13 - 11Russia Declassified Aug 17, 2018 -
13 - 12They Came From the Sky Aug 24, 2018 -
13 - 13The Artificial Human Aug 31, 2018 -
13 - 14The Alien Phenomenon Jan 04, 2019 -
13 - 15Return to Mars Jan 07, 2019
12
Season 12 Apr 28, 2017
-
12 - 1The Alien Hunters Apr 28, 2017 -
12 - 2Forged by the Gods May 05, 2017 -
12 - 3The Mystery of Rudloe Manor May 12, 2017 -
12 - 4The Alien Architects May 19, 2017 -
12 - 5The Pharaohs' Curse May 26, 2017 -
12 - 6The Science Wars Jun 02, 2017 -
12 - 7City of the Gods Jun 09, 2017 -
12 - 8The Alien Frequency Jun 16, 2017 -
12 - 9The Majestic Twelve Jul 07, 2017 -
12 - 10The Akashic Record Jul 14, 2017 -
12 - 11Voices of the Gods Jul 21, 2017 -
12 - 12The Animal Agenda Jul 28, 2017 -
12 - 13The Replicants Aug 04, 2017 -
12 - 14A Spaceship Made of Stone Aug 11, 2017 -
12 - 15The Alien Disks Sep 08, 2017 -
12 - 16Return to Gobekli Tepe Sep 15, 2017
11
Season 11 May 06, 2016
-
11 - 1Pyramids of Antarctica May 06, 2016 -
11 - 2Destination Mars May 13, 2016 -
11 - 3The Next Humans May 20, 2016 -
11 - 4The New Evidence May 27, 2016 -
11 - 5The Visionaries Jun 10, 2016 -
11 - 6Decoding the Cosmic Egg Jun 17, 2016 -
11 - 7The Wisdom Keepers Jun 24, 2016 -
11 - 8The Mysterious Nine Jul 08, 2016 -
11 - 9The Hidden Empire Jul 15, 2016 -
11 - 10The Prototypes Jul 22, 2016 -
11 - 11Space Station Moon Jul 29, 2016 -
11 - 12Russia's Secret Files Aug 12, 2016 -
11 - 13Beyond Roswell Aug 19, 2016 -
11 - 14The Returned Aug 26, 2016 -
11 - 15Shiva the Destroyer Sep 02, 2016
10
Season 10 Jul 24, 2015
-
10 - 1Aliens B.C. Jul 24, 2015 -
10 - 2NASA's Secret Agenda Jul 31, 2015 -
10 - 3Aliens and Robots Aug 07, 2015 -
10 - 4Dark Forces Aug 14, 2015 -
10 - 5The Alien Evolution Aug 21, 2015 -
10 - 6The Other Earth Aug 28, 2015 -
10 - 7Creatures of the Deep Sep 04, 2015 -
10 - 8Circles from the Sky Sep 18, 2015 -
10 - 9The Alien Wars Oct 02, 2015 -
10 - 10The Forbidden Zones Oct 09, 2015
9
Season 9 Oct 31, 2014
-
9 - 1Forbidden Caves Oct 31, 2014 -
9 - 2Mysteries of the Sphinx Nov 07, 2014 -
9 - 3Aliens Among Us Nov 14, 2014 -
9 - 4The Genius Factor Nov 21, 2014 -
9 - 5Secrets of the Mummies Nov 28, 2014 -
9 - 6Alien Resurrections Dec 05, 2014 -
9 - 7Alien Messages Dec 19, 2014 -
9 - 8The Great Flood Dec 23, 2014 -
9 - 9Aliens and the Civil War Apr 10, 2015 -
9 - 10Hidden Pyramids Apr 17, 2015 -
9 - 11The Vanishings Apr 24, 2015 -
9 - 12The Alien Agenda May 01, 2015
8
Season 8 Jun 13, 2014
-
8 - 1Alien Transports Jun 13, 2014 -
8 - 2Mysterious Structures Jun 20, 2014 -
8 - 3Mysterious Devices Jun 27, 2014 -
8 - 4The Reptilians Jul 25, 2014 -
8 - 5The Tesla Experiment Aug 01, 2014 -
8 - 6The God Particle Aug 08, 2014 -
8 - 7Alien Encounters Aug 15, 2014 -
8 - 8Aliens & Superheroes Aug 22, 2014
7
Season 7 Jan 24, 2014
-
7 - 1Aliens and Stargates Jan 24, 2014 -
7 - 2Aliens in America Jan 31, 2014 -
7 - 3The Star Children Feb 07, 2014 -
7 - 4Treasures of the Gods Feb 14, 2014 -
7 - 5Aliens and the Red Planet Feb 21, 2014 -
7 - 6The Shamans Feb 28, 2014 -
7 - 7Aliens and Insects Mar 07, 2014 -
7 - 8Alien Breeders Mar 14, 2014
6
Season 6 Sep 30, 2013
-
6 - 1The Power of Three Sep 30, 2013 -
6 - 2The Crystal Skulls Oct 07, 2013 -
6 - 3The Anunnaki Connection Oct 14, 2013 -
6 - 4Magic of the Gods Oct 21, 2013 -
6 - 5The Satan Conspiracy Oct 28, 2013 -
6 - 6Alien Operations Nov 01, 2013 -
6 - 7Emperors, Kings and Pharaohs Nov 08, 2013 -
6 - 8Mysterious Relics Nov 15, 2013 -
6 - 9Aliens and Forbidden Islands Nov 29, 2013 -
6 - 10Aliens and The Lost Ark Dec 06, 2013 -
6 - 11Aliens and Mysterious Mountains Dec 13, 2013
5
Season 5 Dec 21, 2012
-
5 - 1Secrets of the Pyramids Dec 21, 2012 -
5 - 2Aliens and Cover-Ups Dec 28, 2012 -
5 - 3Alien Power Plants Jan 04, 2013 -
5 - 4Destination Orion Jan 11, 2013 -
5 - 5The Einstein Factor Jan 18, 2013 -
5 - 6Secrets of the Tombs Jan 25, 2013 -
5 - 7Prophets and Prophecies Feb 08, 2013 -
5 - 8Beyond Nazca Feb 15, 2013 -
5 - 9Strange Abductions Feb 22, 2013 -
5 - 10The Von Daniken Legacy Apr 05, 2013 -
5 - 11The Viking Gods Apr 12, 2013 -
5 - 12The Monoliths Apr 19, 2013
4
Season 4 Feb 17, 2012
-
4 - 1The Mayan Conspiracy Feb 17, 2012 -
4 - 2The Doomsday Prophecies Feb 17, 2012 -
4 - 3The Greys Feb 24, 2012 -
4 - 4Aliens and Mega-Disasters Mar 02, 2012 -
4 - 5The NASA Connection Mar 09, 2012 -
4 - 6The Mystery of Puma Punku Mar 16, 2012 -
4 - 7Aliens and Bigfoot Mar 23, 2012 -
4 - 8The Da Vinci Conspiracy Apr 06, 2012 -
4 - 9The Time Travelers Apr 27, 2012 -
4 - 10Aliens and Dinosaurs May 04, 2012
3
Season 3 Jul 28, 2011
-
3 - 1Aliens and the Old West Jul 28, 2011 -
3 - 2Aliens and Monsters Aug 04, 2011 -
3 - 3Aliens and Sacred Places Aug 11, 2011 -
3 - 4Aliens and Temples of Gold Aug 18, 2011 -
3 - 5Aliens and Mysterious Rituals Aug 25, 2011 -
3 - 6Aliens and Ancient Engineers Sep 01, 2011 -
3 - 7Aliens, Plagues and Epidemics Sep 08, 2011 -
3 - 8Aliens and Lost Worlds Sep 15, 2011 -
3 - 9Aliens and Deadly Weapons Sep 22, 2011 -
3 - 10Aliens and Evil Places Sep 28, 2011 -
3 - 11Aliens and the Founding Fathers Oct 05, 2011 -
3 - 12Aliens and Deadly Cults Oct 12, 2011 -
3 - 13Aliens and the Secret Code Oct 19, 2011 -
3 - 14Aliens and the Undead Oct 26, 2011 -
3 - 15Aliens, Gods and Heroes Nov 16, 2011 -
3 - 16Aliens and the Creation of Man Nov 23, 2011
2
Season 2 Oct 28, 2010
-
2 - 1Mysterious Places Oct 28, 2010 -
2 - 2Gods & Aliens Nov 04, 2010 -
2 - 3Underwater Worlds Nov 11, 2010 -
2 - 4Underground Aliens Nov 18, 2010 -
2 - 5Aliens and the Third Reich Nov 25, 2010 -
2 - 6Alien Tech Dec 02, 2010 -
2 - 7Angels and Aliens Dec 09, 2010 -
2 - 8Unexplained Structures Dec 16, 2010 -
2 - 9Alien Devastations Dec 23, 2010 -
2 - 10Alien Contacts Dec 30, 2010
1
Season 1 Apr 20, 2010
-
1 - 1The Evidence Apr 20, 2010 -
1 - 2The Visitors Apr 27, 2010 -
1 - 3The Mission May 04, 2010 -
1 - 4Closer Encounters May 18, 2010 -
1 - 5The Return May 25, 2010
0
Season 0 Mar 08, 2009
-
0 - 1Chariots, Gods & Beyond Mar 08, 2009 -
0 - 2Faces of the Gods Jul 25, 2014 -
0 - 3The Ultimate Evidence: Beyond Nazca May 15, 2015 -
0 - 4The Ultimate Evidence: The Monoliths May 22, 2015 -
0 - 5The Ultimate Evidence: The Tesla Experiment May 29, 2015 -
0 - 6The Ultimate Evidence: Alien Power Plants Jun 05, 2015 -
0 - 7The Ultimate Evidence: The Mystery of Puma Punku Jun 12, 2015 -
0 - 8The Ultimate Evidence: Alien Messages Jun 19, 2015 -
0 - 9The Ultimate Evidence: Aliens and the Lost Ark Jun 26, 2015 -
0 - 10
Overview
If extraterrestrials influenced human history, can evidence of their existence be found in hidden tunnels and caverns around the world? Could a cave in Ecuador contain metallic books inscribed with secrets of alien technology? Was an ancient underground city in Turkey built with alien help... or as a refuge from an alien attack? Rumors of the U.S. military working alongside aliens in a secret base inside a mesa in New Mexico continue to swirl, Native American legends mention strange inner-Earth beings, and recent archaeological discoveries in the Yucatan may point to an extraterrestrial reality behind.
Year 2026
Studio History
Director Kevin Burns
Popularity 25.1753
Language English
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