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Researcher and author Rick Osmon joins us to investigate the hidden chapters of America’s ancient past. From claims of Old World contact long before Columbus to mysterious inscriptions, unusual archaeological sites, ancient navigation and controversial evidence that challenges conventional timelines, Rick takes us into a very different version of American prehistory.

We also discuss one of the stranger traditions associated with early exploration of the continent — the claim that King Arthur, or figures connected with the Arthurian world, may somehow have reached America centuries before the accepted European voyages. How much of this is legend, and could any physical evidence support the idea?

From ancient travellers and forgotten migrations to archaeological mysteries scattered across North America, this episode asks a simple question: how much of America’s earliest history have we yet to understand?

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In this special archive bonus show, Graham Hancock takes us across the globe in search of some of the most mysterious megalithic sites ever built. From the vast basalt ruins of Nan Madol in Micronesia and the towering moai of Easter Island, to the strange chullpa towers of Cutimbo in Peru, the prehistoric temples of Malta, the controversial ancient site of Gunung Padang in Indonesia, and the colossal stone blocks of Baalbek in Lebanon, we look at the engineering, traditions and unanswered questions surrounding these extraordinary places.

Were these monuments created independently by isolated cultures, or do they preserve traces of a much older chapter of human history? Hancock discusses lost civilizations, ancient seafaring, forgotten technologies and the possibility that our understanding of the human past may still be incomplete.

Now on Spotify https://open.spotify.com/show/57DWFx0n8eUmRyAMGTnWIOWhat if the Great Pyramid and the temples of ancient Egypt were not built with the crude methods we have been taught to imagine?

In this episode, engineer and author Christopher Dunn, best known for The Giza Power Plant and Lost Technologies of Ancient Egypt, takes us inside some of the most extraordinary stonework ever produced. From the immense granite blocks of Giza to precision-cut surfaces, drilled cores and vast monuments assembled from stones weighing tens and even hundreds of tons, Dunn asks whether conventional explanations fully account for what survives.

We look at the engineering evidence, the tools ancient Egyptian craftsmen are known to have possessed, the tolerances claimed for certain monuments, and Dunn’s controversial argument that traces of advanced machining may still be visible in the stone itself.

Were Egypt’s builders simply masters of organisation, manpower and traditional stoneworking, or have we underestimated the level of engineering knowledge behind some of the ancient world’s greatest monuments?

Sophisticated Engineering in Ancient Egypt That Will Shock You — with Christopher Dunn.

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Gary A. David (Archive Bonus Release) joins us to discuss Hopi Blue Star lore, ancient prophecy, and the mysterious monuments of the American Southwest. Drawing on decades of research into Hopi traditions, archaeology, astronomy, and the landscapes once occupied by the Ancestral Puebloans—often known as the Anasazi—David investigates traditions surrounding the Blue Star Kachina, cycles of destruction and renewal, and expectations surrounding a time of return.

The discussion moves across the deserts of Arizona and the wider Four Corners region, where ancient settlements, ceremonial centres, petroglyphs, roads, and astronomical alignments raise questions about how their builders understood the sky and their place within the cosmos. David also presents his research into possible relationships between Hopi sacred geography and constellations such as Orion, asking whether the positioning of ancient sites preserved a terrestrial reflection of celestial patterns.

From Hopi mesas and ancestral ruins to star knowledge, prophecy, migration traditions, and the unanswered questions surrounding the people who constructed some of North America’s greatest ancient monuments, this episode enters a world where archaeology and Indigenous tradition meet beneath the desert sky.

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Across the ancient Americas, stories survive of beings who came from the sky, teachers who descended among humanity, and ancestors whose origins were linked to the stars. In this episode, we enter the world of Ardy Clarke and the Indigenous accounts she collected across North and Central America, comparing them with the mythology, astronomy and sacred architecture of cultures including the Maya, Aztec, Hopi and Pueblo peoples. From Mesoamerican temples aligned with the heavens to oral traditions of Star People and mysterious visitors, we ask whether these stories preserve spiritual beliefs, distant cultural memories, or something far stranger. This is a journey through ancient America where archaeology, mythology and the night sky meet.

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Researcher and author Stephen Mehler investigates the possibility that ancient Kemet inherited knowledge from a civilization far older than dynastic Egypt. Drawing on the teachings of Abd'El Hakim Awyan, ancient traditions, and the extraordinary stonework found across Egypt, Mehler questions whether sites such as Giza were created only as tombs and monuments, or whether they once served purposes connected with sound, water, energy, astronomy, and technologies no longer understood.

From precision-cut granite and massive megalithic blocks to the mysteries surrounding the Great Pyramid and other ancient sites, this conversation looks at evidence often left outside the conventional history of Egypt. Could some of these structures be older than traditionally believed, and could their builders have possessed scientific knowledge inherited from a forgotten period of human history?

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Carmen Boulter (Rest in Peace) gave us an epic show, now released from the Archives, she investigates one of ancient Egypt’s greatest unresolved mysteries: the enormous underground labyrinth believed to lie beneath the sands of Hawara.

Ancient writers described a structure of astonishing scale near the pyramid of Pharaoh Amenemhat III, containing thousands of chambers, courts, passages and sacred spaces. Modern surveys have reported unusual features beneath the site, yet excavation remains limited and the full extent of the complex is still unknown.

In this episode, Carmen discusses the historical accounts of Herodotus and other classical writers, the archaeological work carried out at Hawara, the controversial geophysical findings beneath the ground and the possibility that the labyrinth preserved records from a forgotten period of Egyptian history.

Could this buried structure contain royal archives, sacred knowledge or evidence capable of changing the accepted story of ancient Egypt? We examine what has been found, what remains disputed and why the lost Labyrinth of Hawara continues to attract researchers from around the world.

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Beneath the sands and ancient stone of the Giza Plateau, rumours have persisted for centuries of sealed chambers, concealed passages and a hidden vault containing the lost treasures and records of early Egypt. In this gripping investigation, researcher Scott Creighton follows the clues buried within old accounts, archaeological reports, pyramid traditions and controversial theories surrounding the Great Pyramid and the Sphinx. Could the plateau conceal a secret archive left by a forgotten civilisation, or even the legendary Hall of Records sought by generations of explorers? Blending documented discoveries with unresolved questions, The Secret Vault of Egyptian Treasures Hidden on the Giza Plateau enters the shadowy world beneath Egypt’s most famous monuments, where every blocked tunnel and unexplored chamber may guard evidence capable of changing the accepted story of the ancient world.

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What if the rise and fall of ancient civilizations followed a vast celestial cycle? This episode investigates the Binary Star Effect—the theory that our Sun may have a distant companion whose orbit drives the precession of the equinoxes and influences recurring ages of destruction, migration, and renewal. From Atlantis and lost kingdoms to ancient calendars and forgotten astronomical knowledge, could the ruins of antiquity preserve evidence of a cosmic cycle modern history has overlooked?

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Was Atlantis only a legend, or did memories of a lost civilisation survive in the lands of the Americas? This episode investigates claims linking Plato’s drowned island to ancient sites, migration traditions, flood accounts, unusual maps, monumental architecture, and evidence of contact across the Atlantic long before Columbus. From the Caribbean and Gulf of Mexico to the Mississippi Valley, Mesoamerica, and the Andes, we separate archaeology from speculation and ask whether the Americas preserve traces of the world behind the Atlantis story. The evidence does not always agree, but it deserves to be heard.