On the Luangwa River, the law of the land is dictated by the ever-changing seasons and the constant cycle of life. In the wet season, the Luangwa Valley is a green paradise. The river's waters flow in abundance and lush green vegetation carpets the landscape. But in the dry season, when rains become but a distant memory the greenery turns brown and the water levels drop by a foot a day.

The Hoanib River runs for around 170 miles. It rises in the Hoanib Valley in Namibia and flows through the parched Namib Desert all the way to the Skeleton Coast before emptying out into the Atlantic Ocean. The river only flows for two weeks a year. When it's born it gathers strength, shaping and invigorating the landscape and all that it touches.