This 4-disc set is a gold mine, filled with a 15-hour treasure hunt spanning three different countries. Season 4 sees the Hoffman crew set out for the greener grass of the Guyana jungle, while the Dakota boys head for an uncharted mountain in Alaska, and Parker exchanges the comforts of home for the brutal Klondike. While the geography for each crew is different, their struggle is all the same: internal tensions, external threats, and nature s fury chip away at every effort to uncover the wealth waiting just beneath the surface. But with a relentless spirit and a little stroke of luck, each man just may return home with a little more than he left with. Yet through it all, these 20 episodes will reveal an unsinkable hope and remind us all that life itself is truly the greatest treasure.