The UnXplained - 6 ª Season

Humanity explores Earth's underground realms, seeking secrets from the past or clues to the future, uncovering profound mysteries buried beneath rock layers and hidden in vast caves, pushing the boundaries of subterranean exploration.

A look at whether time travel has already occurred, on purpose or by accident, and scientists who believe it is theoretically possible.

Mysterious ancient ruins scattered globally in deserts, mountains, jungles. Archaeology attempts to uncover history behind construction of these wonders and their purpose.

During the Middle Ages the Vikings were infamous for being a bloodthirsty band of seafaring warriors. But while we are all aware of the Vikings notorious reputation, Historians are learning surprising new things about this Norse society.

The men who've had the honor of being President of the United States are celebrated as esteemed leaders in the annals of history. There are many bizarre tales involving U.S. Presidents that defy explanation and still shrouded in mystery.