This episode explores whether advanced technologies like sonic weapons, rockets, and lasers might have ancient precedents rather than being purely modern inventions. Ancient astronaut theorists point to the biblical account of Jericho's walls collapsing after Joshua and the Israelites marched around the city blowing rams' horns while carrying the Ark of the Covenant, suggesting this could describe a sophisticated sonic weapon comparable to today's Long Range Acoustic Device (LRAD). Proponents like David Childress and Jonathan Young argue that multiple ancient cultures depict what appears to be modern technology in use thousands of years ago, raising questions about whether such knowledge came from extraterrestrial visitors or represents lost human achievements.
Mainstream archaeologists and biblical scholars interpret the Jericho story as either religious allegory or, more prosaically, evidence of earthquake damage to the ancient city's fortifications—a explanation supported by the region's seismic activity. The episode nevertheless offers an intriguing lens for examining how ancient texts describe seemingly impossible feats, prompting viewers to consider what metaphorical language, technological misunderstanding, or archaeological gaps might explain these accounts. For skeptics, the value lies less in accepting ancient alien intervention than in exploring how pre-modern peoples conceptualized power, divine action, and the limits of human capability—and in questioning which aspects of ancient innovation we may have underestimated or misunderstood.
Antikythera (mechanism discovery site)
Greece · Ancient Greek
Antikythera Mechanism is an ancient analog computer from ~100 BC
Coral Castle
United States · Modern
Built single-handedly by Edward Leedskalnin using unknown technology
Dendera Temple Complex
Egypt · Ancient Egyptian
Carvings depict what appear to be ancient light bulbs (Dendera Light)
Guatemala (ancient artifact site)
Guatemala · Maya
Ancient astronaut theorists argue that a clay artifact from Guatemala depicting a figure inside an aerodynamically shaped turtle-like shell — with what appear to be pilot goggles — represents an ancient depiction of a flying craft or spacecraft seen by early inhabitants. Local archaeologists describe it as a mythological depiction of giant flying turtles from regional legend.
Iron Pillar of Delhi
India · Gupta Empire
1,600-year-old iron pillar shows virtually no rust or corrosion
Mycenae
Greece · Ancient Greek
Ancient astronaut theorists contend that the cyclopean masonry at Mycenae, including a 250-ton lintel stone at the Treasury of Atreus, was beyond the capability of ancient humans and may have required acoustic levitation or extraterrestrial assistance. Mainstream archaeologists attribute the construction to the Mycenaean civilization of the second millennium BC using organized labor and basic mechanical means.
Pyramid of Djoser / Saqqara
Egypt · Ancient Egyptian
Step pyramid design mirrors alien spacecraft landing platforms
Sanxingdui
China · Shu / Ancient Sichuan
Bronze masks with enormous protruding eyes and alien facial features — depictions of extraterrestrial beings
Syracuse (ancient city)
Italy · Ancient Greek
Ancient astronaut theorists suggest Archimedes' death ray mirror at Syracuse, used to burn Roman warships in 214 BC, may have been inspired by or derived from extraterrestrial technology described in Greek myths about Zeus's thunderbolts. Mainstream historians credit Archimedes' own genius as a mathematician and engineer for conceiving the parabolic mirror weapon, though its historical accuracy remains debated.