Season 10, Episode 9 of The Curse of Oak Island, "A Damming Clue," features the discovery of a significant buried dam structure at the edge of the swamp, aligning with Zena Halpern's maps. The team also uncovers a potential 18th-century button on Lot 5 and continues excavation on the Garden Shaft at roughly 93 feet, fueling theories of a man-made, historical operation. For more details, visit Rotten Tomatoes . Buy & Watch The Curse of Oak Island: Season 10 - Vudu