Unearthed - Season 4 (2018)

For the first time, archaeologists use cutting-edge technology to discover what lies beneath China's Forbidden City, revealing the dark secrets of this mysterious mega-palace that have buried for nearly 600 years.

The Inca capital of Cuzco was said to be the site of untold gold and riches, and new discoveries at this mysterious site reveal the secrets behind this mighty empire's fall.

A ground-breaking experiment reveals how ancient Egyptians built the giant obelisks of Thebes; new discoveries at this holy site could explain why these mysterious marvels triggered the downfall of the pharaohs and the end of Egypt's golden age.

The discovery of strange giant stone heads in the Mexican jungle leads archaeologists to the lost capital city of the Olmec; new investigations reveal evidence that the secret knowledge of these mysterious people changed life in the Americas forever.

The treasures of Ramses II are found at Abu Simbel, a giant temple carved into a desert cliff over 3,000 years ago, and new discoveries at this marvel reveal the secrets of ancient Egypt's greatest pharaoh.

Deep in the jungle, the lost city of Tikal holds the dark secrets of the Maya; a new investigation uncovers how it grew into a megacity home to 100,000 people, and why it was mysteriously abandoned.

New discoveries at a strange prehistoric site reveal the dark secrets and rituals of the mysterious people who built the world's largest stone circle, three times bigger than Stonehenge, and just as enigmatic.