Chris makes an incredible discovery that sets the team up on the best gold all season; as winter starts to close in, Dave gets a hot tip that takes him 2,500 miles north to a mine where he pans the biggest nugget of his career.

On the scent of big gold, Turin and his crew test the limits of the landowner's patience when they cut a fence to access ground on his cattle grazing land; Dave investigates another promising hard rock mine.

Dave Turin and his crew turn their trommel up to double speed hoping to get the most gold from Montana's historic Birdseye mine; dirty water and ground that's not producing challenge the crew, forcing Dave to call an audible at the last minute.

Dave and his crew are low on morale and behind on their target; he calls in a friend to search for gold at Birdseye while he investigates a mine below ground.

Dave gambles on a new piece of machinery; tensions grow when gold goes missing somewhere on the mine, and Jason makes a game-changing discovery.

After a great start, thick clay in the pay dirt clogs the sluice, forcing Dave Turin and his crew to quickly troubleshoot the land and get the operation back on the gold.

Dave Turin and his crew kick off an epic new mining season in the historic hills of Montana; after a freak accident nearly derails their expedition from the start, they rally and find the first big gold of the season.

Dave's entire season comes down to the final 24 hours and a bold risk that threatens to shut down his operation and force him out of the gold game for good.

Dave faces a nightmare scenario when the ground he's mining goes cold and no one knows why; with his season hanging in the balance, the pressure mounts for Dave to get them back on the gold.

Dozer Dave bets his life savings that he can unearth piles of gold from an abandoned mine using salvaged equipment and a team of amateur miners.

Former "Gold Rush" miner Dave Turin sets out on his own prospecting for an abandoned gold mine to reopen; when an investor backs out, Dave has to decide if he's willing to risk his family's life savings on his ability to bring home the gold.

In the season finale, it's a race against mother nature at the Blue Room Cut to capitalize on a short weather window before winter closes Team Turin out of Montana; overcoming early mechanical setbacks, the team perseveres to a surprising end.

Back where their gold-mining adventures began, "Gold Rush" alumni Dakota Fred and son Justin persevere in the face of long odds, risking their lives for a fortune they may never realize. Assisted by a team of intrepid divers, mountaineers and bush mechanics, the Dakota Boys explore the white water rapids of McKinley Creek in Alaska, diving deep in raging torrents with a suction dredge. Not only could one wrong move prove deadly, but the guys also face wild animals, extreme temperatures and hypothermia.

Although the state's mention in the title was dropped after the first season, Alaska still plays a major role in Discovery Channel's top-rated show. It follows gold miners, inexperienced as some may be, hoping to strike it rich in the wilds of The Last Frontier and beyond. For their first effort, a crew led by Todd Hoffman and his father, Jack, sunk $250,000 into their dream and came away with just $20,000 worth of gold. The dismal summer was filled with injuries, malfunctioning equipment and constant fighting among the greenhorn miners, yet their serious case of gold fever trumps any talk of giving up and leads to new operating plans in order to salvage their dream. The series also keeps tabs on the efforts of brash youngster Parker Schnabel, veteran Dakota Fred and longtime Yukon resident Tony Beets to hit the mother lode at separate sites.

Despite striking it rich mining in his home state of Alaska, "Gold Rush" star Parker Schnabel isn't satisfied. He's always wondered if he could follow in the footsteps of his forebears and take on the legendary Klondike Gold Rush trail. Wonder no more. In honor of his family -- especially his beloved grandfather, who always inspired him to push beyond his limits -- Parker attempts to mimic a journey that killed thousands of brave souls in the late 19th century. As winter closes in, he begins the trek across the Coastal Range and works his way to the fabled goldfields of the Klondike. He's joined by his foreman, Rick Ness; wilderness guide Karla Ann, who once worked with Parker as a rock truck driver; and cameramen James Levelle, who has known Parker for years.

Only the truth leads to the treasures. That's why Josh and Jesse Feldman are hot on the trail of the truth, digging for clues as they search for America's most fabled missing treasures. The sibling prospectors from Arizona have scoured the mountains of the American West for lost gold mines and buried treasures their entire lives. With reverence for the past and a taste for adventure, they now attempt to unravel 100-year-old mysteries by putting themselves in the shoes of the people of the era. Josh and Jesse track legends and clues across the vast American Frontier in search of unfound riches, assisted by old maps, diaries and records, and connecting with locals who have intimate knowledge of the area.

In Discovery Channel's top-rated show "Gold Rush," gold miners, inexperienced as some may be, hope to strike it rich in the wilds of Alaska and beyond. Some dismal summers result, filled with injuries, malfunctioning equipment and constant fighting among the greenhorn miners, yet serious cases of gold fever always trump any talk of giving up and sometimes leads to dreams being salvaged. The companions series "The Dirt" presents the inside scoop on behind-the-scenes relationships between such miners as brash youngster Parker Schnabel and longtime Yukon resident Tony Beets, as the quest to hit the mother lode never stops.

The collapse of his gold mining business in Alaska has forced Farley Dean, his family, and his crew to pick up the pieces in a faraway, uncharted territory teeming with danger. Off of the coast of Papua New Guinea, on Bougainville Island, lies one of the largest untapped gold reserves in the world, but few prospectors have dared come face to face with its ferocious guardians -- crocodiles that have claimed the lives of countless fortune-seekers. Dean and his crew wade into lethal waters searching for gold just months after a local teenage boy was eaten by a croc. Assuming death is cheated, Farley's risked-filled adventure either leads to a multimillion-dollar windfall or furthers his family's financial downfall.

Renowned gem hunter Guy Clutterbuck has put together an elite team to mine rubies, emeralds, sapphires and all manner of precious stones. The group of strangers -- an Aussie miner, an American engineer, an American gold prospector and explosives expert, and a British ex-Army mechanic -- risks their own money, time and reputations on Clutterbuck's promise of adventure, gems and big profits. Traveling from muddy pit mines of Madagascar to mountain caves of Colombia to the Arctic landscape of Greenland, the team takes on the elements, terrain, and even each other on their epic mission.

The gold rush in Alaska isn't confined to the state's precious ground. It's taking place on the sea ... or more accurately, on the bottom of the frigid Bering Sea. This series, from the creators of the Emmy-winning "Deadliest Catch," follows four gold dredges and their eccentric and driven crews who risk their lives to find as much gold as possible before winter sets in and it's too dangerous to dive. The custom-built rigs, some barely seaworthy, include an 80-foot barge run by the most successful gold dredger in Nome, Alaska, and a modified skiff that seats only two people.

Venturing deep into the cruel wilderness of British Columbia, three extreme prospectors embark on a modern gold rush, balancing their hunt for riches with their will to survive. Boyce Goff, Ben van der Valk and John Belcik travel separately into the areas of Devil's Canyon that are far beyond the reach of big mining companies. Alone for weeks, the men self-document their experiences as they make their way to the world's largest creekside gold deposit, knowing that winter is quickly approaching. They are caught in a tug of war between potentially securing millions of dollars in gold and doing whatever it takes to get home alive.

Greenhorn gold miners George Wright and Scott Lomu put everything on the line -- their lives included -- to hit pay dirt in the gold-rich and danger-filled jungles of Ghana. It's Africa's second largest gold-producing country, so finding the precious metal isn't the hard part. That would be exporting it, as Wright and Lomu have to mine through such obstacles as armed locals and illegal miners to get the gold home. The partners need to make at least $150,000, the amount they borrowed to cure their gold fever brought on when each took a financial bath in the 2008 real estate market crash.