Fred fires his dredge back up and lands his biggest gold haul of the year. Dustin faces an uncertain future and Carlos makes a surprising discovery at the new dive site.

Dustin cleans up with his biggest gold haul yet. At Thunder Falls, engine failure and giant boulders block Fred's path to gold, and as the problems escalate, his life is on the line.

The Dakota Boys are close to a huge gold cleanup; Ryan faces his worst fears as he dives deeper than ever into a crumbling, narrow 14-foot hole; Carlos finally hits bedrock at Rockfall Ravine and reveals that this dive site could pay out huge.

Digging deeper than ever, the crew sees no sign of the promised bedrock gold; just when the crew starts to question Dustin's leadership, his determination pays off.

The group cleans up and does a final gold weigh-in for the season. Meanwhile, Dustin leads the crew to a new mine site that quickly proves to have huge potential.

'The Dakota Boys' launch their gold dredge. Fred dives in the raging white water, and despite running out of air, the 72-year-old veteran succeeds in finding their first gold.

The first gold nugget promises a monster payday; Dustin dives into the danger zone, a torrent where the current moves rocks, and a rogue boulder almost costs him his life.

73-year-old Dakota Fred gets married for the fourth time and a landslide upstream threatens to unleash a wall of water that could destroy the dive site and drown the miners.

Equipment failure leaves one crew member with life-threatening burns, while the advantage of having two dredges up and running proves successful.

The Dakota Boys and their crew members reflect on their wild season and look ahead to what's next.

Television's most dangerous gold mining is back. The Dakota Boys double down on everything including crew, locations, and equipment, while the remote Alaska conditions punish their efforts like never before.

A hungry and aggressive apex predator tears through the miners' camp, forcing the crew members to come together to find a solution; the crew uses new equipment to speed up their gold recovery.

Fred and Dustin disagree on where to find the gold and dig separate holes. But, a fierce confrontation jeopardises the entire operation.

The Dakota boys are dredging towards a nugget trap they believe holds a jackpot of gold. After a rough season, this could this be the life-changing fortune they desperately need.

The Dakota Boys finally discover a rich nugget trap but inadvertently risk the life of a crew member.

Finding their biggest gold nugget of the season is a great sign, but soon enough heavy rain means flooding, and, despite the danger, the Dakota Boys still go out and dive.

After being rescued from the water, Dustin is forced to look for a new mine site due to the flood, but he soon finds out that the McKinley site may not be a lost cause after all.

The Dakota Boys return to McKinley Creek to dive for millions in gold. But the fierce Alaskan winter has destroyed their mining equipment. Their luck changes when Dustin locates the perfect plunge-pool he believes contains a massive pile of nuggets.

Fred's ex-boss, Todd Hoffman, has invested $50,000 in the Dakota Boy's operation and makes a surprise visit in a chopper.

A flash flood racing down McKinley Creek threatens to kill the crew and destroy their operation, but the Dakota Boys still manage to find more gold than they've got all season.

Fred and Dustin Hurt decide to split up in their hunt for gold in the raging waters of Alaska's Chilkat mountains. While Fred has an ideal spot picked out, Dustin has a big decision to make about his location.

A heartbreaking revelation sends shockwaves through the crew as they tackle their toughest dive site yet in search of millions in gold

Reeling from tragic news, Dustin and the miners fight to get a diver in the water earlier than ever before, and their determination is rewarded

The Dakota Boys' desperate bid to hit bedrock gold is thwarted when 73-year-old Fred's heating system fails mid-dive and he's is overcome by the glacial Alaskan water.

The Dakota Boys are digging down to bedrock gold but when they hit the biggest boulder of the season Dustin is forced to rig a new mechanical solution the Graboid.