Podcasts

Explore original shows from The Unexplained Company.

Unexplained

Original podcasts, videos, investigations, and strange stories from The Unexplained Company.

Explore

PodcastsVideosStoriesEpisodesApp

Company

AboutContactEditorial StandardsAdvertise

Follow us

FacebookTwitter / XInstagramYouTube

© 2026 The Unexplained Company. All rights reserved.

Web & App Development by Rovidx Media
TermsPrivacyEditorial Standards
Unexplained
Free AudiobookFree book
  • Podcasts
  • Videos
  • Stories
  • Topics
Menu
  • Podcasts
  • Videos
  • Stories
  • Topics
  • Free Weekly Briefing
  • Listen Now
Appearance
Unexplained
  • Podcasts
  • Videos
  • Stories
  • Topics
Menu
  • Podcasts
  • Videos
  • Stories
  • Topics
  • Free Weekly Briefing
  • Listen Now
Appearance
Free AudiobookListen Now
Podcasts/Unexplained History/Episode 2
Uncovering the Past: The Coso Artifact and History’s Greatest Anomalies artwork

Uncovering the Past: The Coso Artifact and History’s Greatest Anomalies

Unexplained HistoryAPR 4, 2026 • 60 MIN • SEASON 3, EPISODE 2

In 1961, three friends hunting for geodes in California's Coso Mountains cracked open a rock to find something that seemingly defied time: a mechanical object encased in ancient stone. Was the Coso Artifact a relic of a lost civilization, or is there a more grounded explanation hidden in the geological crust?

Episode Playback

00:0001:00:28
Download

Episode notes

In 1961, three friends hunting for geodes in California's Coso Mountains cracked open a rock to find something that seemingly defied time: a mechanical object encased in ancient stone. Was the Coso Artifact a relic of a lost civilization, or is there a more grounded explanation hidden in the geological crust? In this episode of Unexplained History, host Tom McKenzie dives into the world of Out-of-Place Artifacts (OOPArts). We explore the friction between sensationalist media claims and the rigorous methods of professional archaeology. From the spark plug-like interior of the Coso find to the complex gears of the Antikythera Mechanism, we examine how context, provenance, and modern imaging like CT scans separate genuine historical wonders from long-standing myths. Join us as we investigate the figures who shaped these narratives—from antiquity dealers like Eugene Boban to dedicated researchers like Tony Freeth—and discover why some "mysteries" persist long after the evidence has spoken.

Series
Unexplained History
Archive position
61 of 103
Season
3
Released
Apr 4, 2026
Runtime
1:00:28
Conrad Blackwood: Darkness and Light by Rob Davenport — the selected library doorway cover

A free audiobook.
A weekly discovery.

The story doesn’t have to end here. Get your next listen in one free weekly email.

Discover Darkness and Light

Join the Weekly Briefing for Conrad Blackwood: Darkness and Light, the complete audiobook free when it’s ready. In development; no release date has been announced.

Free. Unsubscribe anytime. · Privacy

Continue the Story

← Older Episode

Lemuria: The Sunk Continent Myth vs. Geological Truth

Apr 2, 2026 · 1:05:03

View Episode →

Newer Episode →

The Lost City of Z: Percy Fawcett and the Ancient Secrets of the Amazon

Apr 7, 2026 · 1:01:34

View Episode →

More From This Show

View All Episodes →
  • S2 · E78

    The Devils of Loudun Part One: Terror Behind Convent Walls | Halloween Special 3 of 6

    Oct 24, 2026 · 52:01

    View Episode →

Unexplained History artwork

Unexplained History

Unexplained History delivers unexplained events analysis and deep dives into the history of the unexplained. Join host Tom McKenzie weekly as we uncover the secrets behind history’s greatest cold cases and cover-ups.

103 EPISODES • 3 SEASONS

View Show →

Follow & Listen

S2 · E77

John Dee Part Two: What the Angels Demanded | Halloween Special 2 of 6

Oct 22, 2026 · 49:04

View Episode →

  • S2 · E76

    John Dee Part One: The Voices in the Stone | Halloween Special 1 of 6

    Oct 20, 2026 · 51:52

    View Episode →

  • S2 · E75

    The Fighter Pilot Who Died Chasing a Giant Object

    Oct 17, 2026 · 54:25

    View Episode →