Africa's Stonehenge.

from Decoding The Unknown · host Cloud10

Is Adam’s Calendar the oldest manmade structure on Earth—or a pile of stones hyped up by ancient alien fans? We dig into South Africa’s strangest mystery to find out what’s real. Learn more about your ad choices. Visit megaphone.fm/adchoices

Episode metadata supplied by the publisher feed · Published Apr 4, 2025

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Africa's Stonehenge.

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