Deep in the heart of Texas is the city and county of Rockwall USA.

It's in that vast part of Texas that's absolutely flat as far as the eye can see.

But below that flat plane of earth

lies an enigma, a network of stone walls

buried deep underground.

Who built them? Was it a prehistoric race of giants? Or could it be

that the truth is somewhat more natural? That's coming up right now on Skeptoid.

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You're listening to Skeptoid.

I'm Brian Dunning from Skeptoid.com, the Rock Wall of Texas.

Welcome to the show that separates fact from fiction, science from pseudoscience, real history from fake history,

and helps us all make better life decisions by knowing what's real and what's not.

The city and county of Rockwall, Texas, did not get the name by accident.

It's known for what appears to be an enormous system of walls made from stone bricks,

nearly all buried underground,

such that if you try to excavate for construction,

there's a solid chance you may run into one of these.

...