In one of the most hostile places on Earth, the Outback Opal Hunters return for a ruthless 7th season, braving new frontiers in an industry facing total annihilation. 　　Last season, as a new generation of miners rallied, cataclysmic weather put dedication to the ultimate test as once-in-a-generation flooding drowned the Australian Outback. Mines and partnerships disintegrated, an... (展开全部)