Dave attempts to crack the old timers' code in the town of Marysville.

Dave uses his experience to decode 1,400 acres of Birdseye Mine.

Dave brings his crew to a hotspot along the banks of the Missouri River.

An old buddy offers Dave a stake in land the old timers missed.

Dave travels down into old abandoned tunnels at Miller Mountain Mine.

Dave hunts for riches left behind in a 50-year-old abandoned mine.

Dave takes part in a fire test to find gold deep in the Alaskan wilderness.

Dakota Fred taps out Thunder Falls with his biggest gold haul.

The Dakota boys finish out their season with a record gold haul. Fred discovers a pocket of gold above Thunder Falls. Two miles away, Dustin battles a boulder field. Despite heavy rainfall and raging waters The Dakota Boys find their biggest nugget.

The Dakota Boys and their crew face down unprecedented challenges.

Duane won't stop until he gets his hands on the gold under his property.

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Dredgers brave the frigid Alaskan waters hoping to strike gold.

A rainy day leads to trouble when Shawn gets hurt in a bar fight.

Sunny weather brings all dredges out to sea, but conflicts quickly arise.

Adrenaline-seeking repo men chase planes for big dollars across America.