Smithsonian Ch. - Secrets Unlocked Series 1 (2020) Part 20 Americas Lost Pyramid

Secrets Unlocked Series 1

Our world holds remarkable relics that are full of secrets, written in stone, gold, and blood. Discovering the truths behind these mysteries could change history as we know it. Join host Adam Mastrelli as he brings us face-to-face with these puzzling treasures. Explore hidden corners of the world, decipher ancient documents, and apply groundbreaking research and forensic techniques in our quest to discover the truth about these fabled cities, monuments, and remnants.

Part 20 Americas Lost Pyramid

What destroyed America's first great empire? Was it a drought? A civil war? Or a natural disaster of biblical proportions?

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