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S14: Thanksgiving Special Release - MAUB 57 - Whistling ghosts, black triangles and a mystery boom.

Monsters Among Us

00:00

Explosions in the Ground

"It could be a single explosion like boom, you know, or it could be like a chain of explosions," he says. "You're hearing only the lowest portion of the audio spectrum and it has to be massively powerful" The sound was coming from what's known as butte mountain in Amador County,. It's not really a mountain, but an isolated hill with a cell tower on its top.

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