Tony Beets gambles millions to overhaul his operation. Rick Ness needs a wash plant that matches his big ambitions, while Dave Turin hunts for new ground.

Tony Beets battles the Klondike winter to secure a monster excavator. As the competition for ground heats up, Fred Lewis searches for the motherlode in Nevada.

Rick resurrects Monster Red to capture nuggets with help from Freddy Dodge and Tony builds a huge excavator. Dustin returns to Haines after a devastating landslide.

Tony Beets sets his sights on a $3.5-million monster dozer. Dave Turin hunts for a claim with his new Mad Max prospecting machine. To hit his 2000-ounce target, Rick Ness tests a pioneering drilling technique.

Dave Turin prospects virgin ground on a snow-covered claim in Idaho. Fred Lewis explores an underground river in search of gold. Dustin and Carlos battle deep snow and brutal weather at McKinley camp.

Dave Turin's on the trail of a massive honey hole in Idaho. Rick Ness levels up his racing and mining operations. Fred Lewis fights through a snowstorm to prospect a missed opportunity.

Tony Beets finally learns the fate of his Indian River claims -- pivotal to his 9,000-ounce season. Fred Lewis tracks down virgin ground and is shocked by what he finds. Rick Ness gets a jump on the season with a massive Komatsu dozer.