Season 4
10 episodes
44 min. per episode
Where to watch
A relentless marine archaeologist uncovers hidden truths beneath the waves, battling nature’s fury and corporate greed to reveal lost histories.
Episodes
Uncovered clues from a famous Montana battleground, a 19th-century steamboat and a frontier ghost town reveal surprising truths about the Wild West.
Archaeologists and treasure hunters battle it out over half a billion dollars worth of gold and silver. Who will win the Battle for the Black Swan?
From a long lost US base beneath the Arctic ice cap, to a sunken Soviet submarine, the Cold War's toxic legacy is both fascinating and terrifying.
From a buried film set to a WW1 Navy ship and old fishing barge, we discover the role these ruins played in Hollywood movie-making history.
Clues from a 13,000-year-old skeleton and a submerged coastline reveal surprising insights about the first humans to arrive in the Americas.
By scanning the locations at the bottom of the ocean where sunken ships, treasures and even cities lie, the show tries to answer what they look like, how they got there and if they hide any secrets.