A hidden history of gold exploration on Pitt Lake points to Spanish exploration in the search for Slumach's gold.

A Top End cyclone threatens tanker driver Michael's delivery of hazardous chemicals to a desert mine site, and Tasmanian trucker Lindsay transports 80,000 angry bees to a rainforest.

The Poseidon Crew finally start digging the legendary Catto's Paddock in search of a multi-million dollar nugget, and the Goldtimers struggle to keep a borrowed dry blower running.

A robbery at the Gold Retrievers' camp heaps more pressure on Brad and Chris' partnership, Marcus and Linden finally hit a rich patch of nuggets, and the Goldtimers call in reinforcements.

Gale-force winds tear across the outback, causing pandemonium for bull catchers; when hats and helicopters are tossed around by 40-knot winds, Kurt must weigh his goals against the safety of his team.

Mike battles to finish the Road Runner, trading gets nuts with Big Donny, and the crew help a million-dollar build get to the Detroit Autorama.

The lobsters are moving closer to land - and every captain is right behind them - as Steven sets out with an impossible mission: reach his quota in time to surprise his son for his birthday.

Mountains are one of the greatest challenges a railway can face; we investigate the daring engineering that has overcome our greatest ranges to create some of our most innovative railways.

The $50,000 dryblower at the 1870 mine is generating much-needed gold, and Ritchie heads to the Gold Coast to try to sell a showpiece gold nugget for $30,000 to one of his cashed-up socialite mates.

The Poseidon Crew's research digs up an old treasure map that leads to the biggest nugget of the season; Marcus and Linden call in a mentor to help get them on gold in the first week of the season.

The Gold Timers confront gold thieves and a super-sensitive detector lands them on gold, and Shane and Russell's homemade sluice struggles to process pay before they gamble on overworked ground.

Mining season has just begun as newcomer Big Al gets off to a great start, Bernie struggles with an inexperienced crew, and best friends Ken and Guillaume can't find any gold at all.

The team update a 1977 Daimler Sovereign Coupe. They give it a modern makeover with upgrades to the suspension, ride-height, and colour. But a disaster in the paint booth puts the project in peril.

After a crippling five-month shutdown almost pushed their business to breaking point, The Dirt Dogs face a do-or-die season, but a massive piece of new hardware could be the key to untold riches.

After missing out on last season's gold target, miners Chris and Greg Clark decide to go for broke or go broke, but a high-risk deal could land them in deep trouble as they receive harrowing news.

After two months off, Freya Logging moves into their summer block under the threat of a wildfire shutdown; however, setting up their high-tech fleet is marred by some unwelcome ghosts in the machines.

Paul and the crew of the Atlantic Bandit switch from fishing for crab and turbot to chase capelin instead; as they battle dangerous weather and shoals, Skipper Rick must make money or lose his boat.

Big Al's health takes a hit while searching for new ground.

The Gold Devils battle on after losing a team member, the Ferals' nugget trail goes cold, and Jacqui and Andrew face a night-time detecting mission for lost gold.

The Gold Devils gamble on a potential motherlode, Alan and Salty go offroad in the extreme wilderness of the Kimberley, and Shane and Kate try to get two wet plants going but run out of water.

As families celebrate Easter ashore, mysteriously empty traps spark fears of a high-seas robbery across the crab fleet. Captain Steven brings his five-year-old son out to brave the unforgiving Gulf.

As wildfires rage, Dale battles smoke, heat and steep mountain passes to help his friends... until the road fights back.

On April 6, 2008, ODA-3336, including Sgt. John Wayne Walding, was ambushed in Shok Valley. Despite severe injuries, they fought seven hours, killing 150+ insurgents and completing the mission.

In 2016, Green Berets Cole Morrison and Sgt. Rhyan Syester led ODA 5313 to reclaim Dabiq, liberate 37 villages, and destroy ISIS's propaganda hub, completing their mission.

The Poseidon Crew receive devastating news about their mining permits, the Dust Devils gamble big on a huge quartz reef, and Shane and Russell strike gold right on their doorstep.

Marcus and Linden are accused of illegal prospecting, the Goldtimers strike it lucky with a gold-rich patch, and the Victoria Diggers are desperate but receive a lifeline from their neighbour.