It's the last chance for the Rookies' partnership; Col's crew is on a crash course as his illness slows them down; the Cooke brothers fight busted hoses and breakdowns.

The Rookies battle their biggest claim yet; Col's Crew must bring out the old machines to hunt a new opal seam; things heat up as the Fire Crew races a fuel leak while chasing legendary red fire opal.

Justin gambles thousands of dollars as he struggles; opal queen Kelly is in desperate need of a big find; Aaron and Greg's claim might pay off.

There's tension among the rookies as a new partner leads them on a wild goose chase; the Cooke brothers' season is off to a bad and dangerous start.

Justin's excavator has an expensive oil leak; Col's crew is a man down; the Fire Crew is on a wild goose chase hunting a bounty of fabled fire opal.

A new season of opal hunting begins; the Rookies face potential disaster from the get go; for Col's Crew, their mining quest is derailed by a serious illness; the Opal Queen brings in new muscle and new machines for an underground opal hunt.

The mining season is almost over so to reach their target, Col's crew takes one last gamble by opal spotting from the air; the Cookes make one final attempt to save their opal machine; the Rookies get lucky.

With the end of the season fast approaching, the Rookies risk cave-ins at their abandoned mine claim; deep underground, Bomb King George is trapped in the blast zone.

Desperate to move more rock, the Rookies get a lesson in the dangerous art of bomb making; Al and Kelly's lease is up; Col returns to action after a health scare.

It's brother vs. brother as Peter and Mick Cooke go head-to-head in an epic scrapheap challenge to build a monster opal-hunting machine; the Rookies are forced to start hunting at night.

Daniel returns to Coober Pedy a new Dad, determined to find more white opal; Col raises the stakes, forking out thousands on an ancient and dangerous exploration rig; the Opal Queen and her Dad battle the clock, the weather and a deadly cactus.

Pete and Mick's mining operation grinds to a sudden halt, while Col's Crew heads underground; the Rookies are in despair until mentor John Dunstan steps in with a last-minute lifeline.

Rookies Justin and Daniel tread a dangerous path underground in Coober Pedy, while father and daughter mining team Kelly and Al race to stake a claim in Lightning Ridge in an attempt to turn their fortunes around.

In South Australia, rookie miners Daniel Becker and Justin Lang leave their lives behind, risking all to chase an opal fortune.

Justin recruits fiancée Becky to save him from financial ruin; the Fire Crew face deadly reptiles; the Cooke brothers go 21 meters under.

Justin ropes in a stranger to get his excavator across a highway; Kelly battles a new claim with a new partner; Aaron and Greg must push on without Col.

Raised on the rugged plains of Australia, Matt Wright had plenty of jobs -- horse wrangler, Australian Army soldier, crocodile egg collector -- that helped develop his passion and skills for a career as a helicopter pilot and wildlife relocator. Featured in half-hour episodes of "Outback Wrangler," Wright tracks down, captures, and transports a diverse range of dangerous animals, including crocodiles, wild buffalo and even polar bears, that are posing a threat to people. As a chopper pilot he is able to access areas that would otherwise be impossible to reach. Matt's goal, he says, is based on the preservation of wildlife: to remove and relocate problem animals rather than kill them.

Actor Martin Clunes explores 16 of Australia's best islands.

Presenter Todd Sampson puts brain training to the test, undergoing a radical brain makeover.

Detective Jay Swan is tasked with investigating the mysterious disappearance of two young men on an Australia Outback cattle station, and two unexpected visitors cause trouble as the mystery of the missing men unfolds.

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.