JRE Database

Cassie Coppersmith

Guest: Cassie Coppersmith

Date: 2026-07-21 | Duration: 2h 34m

Category: Paranormal & Conspiracy, Science

Episode Overview

Cassie Coppersmith joins Joe to delve into unexplained ancient artifacts and challenge conventional historical timelines. The conversation kicks off with Coppersmith describing fascinating nephrite jade artifacts from China’s Liangzhu culture, found in the British Museum, which appear to be machined with impossible precision for their supposed age (3,400 BC). Joe and Coppersmith examine images of these "Bi-discs" and "Cong tubes," noting the incredibly tight drill marks and perfect 90-degree angles that modern archaeologists struggle to explain. They theorize these objects may be remnants of a more sophisticated, predating culture, later claimed and etched over by subsequent civilizations—a pattern Coppersmith observes in many ancient sites. The discussion expands globally, with Coppersmith highlighting her explorations of lesser-known sites in India and Cambodia, which she argues offer compelling evidence for a much older, technologically advanced past. They discuss lathe-turned pillars in Southern India, the Kailasa Temple carved from a single mountain, and the baffling scale of man-made reservoirs and newly discovered cities in Cambodia revealed by LiDAR scans. Coppersmith posits that these massive undertakings, often attributed to much later civilizations, suggest advanced engineering capabilities, possibly related to water treatment or energy. The conversation also touches on anomalous elongated skulls found worldwide, theorizing they might indicate a different human species with higher brain volume, potentially explaining ancient myths of giants or super-humans. Joe and Coppersmith critique the rigid academic resistance to reevaluating historical timelines, particularly in light of geological evidence like the water erosion on the Sphinx, which suggests it is thousands of years older than conventionally accepted. Coppersmith shares personal artifacts, including a 9,500-year-old spear point found on her family farm, to illustrate the deep antiquity of human presence. They conclude by discussing the Younger Dryas impact theory and the potential for advanced ancient civilizations to have encoded knowledge in durable stone structures, meant to survive cataclysms and be deciphered by future generations.

About Cassie Coppersmith

Cassie Coppersmith is an alternative historian and researcher who challenges conventional archaeological timelines by investigating anomalous ancient artifacts and lesser-known archaeological sites. She has examined precision-engineered artifacts from China's Liangzhu culture, explored massive engineering projects in India and Cambodia, and studied elongated skulls found across multiple continents. Coppersmith argues that geological and archaeological evidence suggests far older, more technologically sophisticated civilizations than mainstream academia acknowledges, positing these advanced cultures may have intentionally encoded knowledge in stone structures to survive catastrophic events.

Key Moments

Transcript Excerpt

[00:00:01] Joe Rogan podcast, checking out. The Joe Rogan Experience. Train by day, Joe Rogan podcast by night, all day. How are you? Great. How are you doing, Joe? Very nice to meet you. Nice to meet you. I've enjoyed your content online. [00:00:17] Thank you. I got first introduced to you by a video you did with his channel's Megalithic Marvels. Yes. Yeah, and it was about ancient Chinese artifacts that don't make any sense. Yes. And it was so fascinating. The moment I saw it, I reached out to my guy, I was like, I got to talk to her because this is crazy. So please explain to people what these artifacts are and what's so bizarre about them. [00:00:44] I first saw these artifacts in the British Museum. So they have an entire whole wall full of them. And they're made of nephrite jade, which is an extremely hard stone. And they just look, they look machined. They look way too precise for the tools that they say built them. So I started doing some research. I haven't been to the site in China. It was built by the Langshu culture, so archaeologists say. [00:01:42] and there are versions that are much cruder, so it almost seems like this civilization had this. My theory is that these were not unlike the hard stone vases in Egypt. So it was something that this culture either was gifted or found, and it turned into a very cherished object, like a grave good for them. So you find these tombs in Langchu, China, that have literally thousands of these jade artifacts in them. And it's not unlike the hard stone bases that you see in Egypt, where you find those in the grapes as well. So what's the timeline where these pieces are attributed to? So these are really old. [00:02:26] I mean, the earthworks and the community around the Liangzhu culture is securely dated by archaeologists to like 3,400 BC. And then, you know, just so it's about the same actually as the graves that were in Egypt with the hard stone bases. So it's very, very old. And at the time of this culture, Wha...

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Frequently asked about this episode

Who was the guest on Joe Rogan Experience #2528?

Cassie Coppersmith was the guest on JRE #2528. This page includes the episode overview, topics discussed, and related resources.

What topics were discussed on JRE #2528?

On Joe Rogan Experience #2528 with Cassie Coppersmith, topics include Precision of Liangzhu culture jade artifacts defying known, Theory: artifacts are older, cherished objects found by, Comparing drill marks: bamboo experiment vs. artifact, and The complex 'Sung tube' artifact and hard nephrite jade.

Where can I read the transcript for JRE #2528?

The full searchable transcript for Joe Rogan Experience #2528 with Cassie Coppersmith is available on this page, along with key topics and timestamps.