On this season, ancient astronaut theorists continue to explore evidence of extraterrestrial contact around the world. From enormous geoglyphs on both the Earth and Mars to strange 17,000-year-old-statues in Africa to remote viewing operations targeting UFOs and other intriguing phenomena, these amazing discoveries shed new light on the theory that extraterrestrials not only visited humans in the distant past, but may still be present on Earth today....

In the second part of the season incredible new developments are explored in the search for evidence of extraterrestrial contact in our distant past, and even today. In Egypt, new technology has detected a previously unknown void in the Great Pyramid; on the island of Sardinia, ancient statues of giants with robotic faces are being shown to the public for the first time; and, in the north of England, scientists claim to have discovered what could...

What supernatural lives will be revealed when Underground Portals explores the 10,000-year-old prehistoric art work discovered in a cave in India. Could the face of Giza's Great Sphinx prove to be older than once thought, and what otherworldly being might it actually represent? History continues its exploration of unexplained events and phenomena in this collection that journeys through the Egyptian pyramids, Central American temples, and Earth's...

Join Giorgio Tsoukalos and other ancient astronaut theorists as they continue their search for evidence of extraterrestrial contact in the distant past as well as the present. From Tibet, Chile, and the Mediterranean to the iconic UFO site of Roswell to the Pleiades star cluster, this season travels to the far reaches of the globe and beyond to delve into mankind's origins, mysterious government organizations, and the secrets of the universe, all...