Ancient China from Above

In this episode, Dr. Allan Maca investigates the biggest man-made structure on Earth: the Great Wall of China. This ancient monument has been studied by experts for decades, but its only now, thanks to new satellite imagery and cutting-edge technology, that its secrets are finally being revealed.

Dr. Allan Maca and his team explore an ancient megacity, the biggest on the planet 4,000 years ago that mysteriously disappeared - a place where the people created Maya-like carvings and humans were sacrificed on an unprecedented scale. Discovering this lost civilization changes everything known about the origins of China, prompting Dr. Allan and his team to solve the mystery.