Michael Ruggeri
flipped into Mike Ruggeri's Ancient Moundbuilders/Ancient Southwest News Magazine
America’s Largest Earthwork, Cahokia’s Monks Mound, May Have Been Built in Only 20 Years, Study Says

America’s Largest Earthwork, Cahokia’s Monks Mound, May Have Been Built in Only 20 Years, Study Says

westerndigs.org - Blake de Pastino

It was ten stories tall, and wider at the base than the Empire State Building. And nearly a thousand years ago, it was the centerpiece of the …

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