Entrepreneurs and adventures Peter Jago and Don McCarthy are on a mission to search for alluvial diamonds washed into the hidden river valleys of Lesotho. Diamond River Hunters follows this maverick team of prospectors on their exploration and quest in extremely challenging conditions to find some of the world's biggest diamonds.

Over a billion years ago, a massive volcano erupted in the Lesotho Mountains, brining to the surface a rare type of magma, rich in gemstones. The magma seem has slowly been eroded, scattering diamonds into the river valley below. This river has never been prospected - until now!

They must journey to the roof of Africa and set up the world's highest diamond mining operation, with the hope of unearthing the biggest diamonds ever found.

The diamonds could be anywhere. The teams objectives are to target likely hotspots and pump the diamonds out of the river. The valley they will be prospecting is isolated and the terrain is harsh and dangerous. From the outset,