The Nile crocodiles that live in the Luangwa River in Zambia dominate the waters sending fear into the hearts of those who enter their domain. For the animals that rely on the river for water, every drink carries potential risk of death as the crocodiles patrol up on down the banks. Prehistoric, deadly and powerful. These are the Luangwa Valley’s ancient rulers. Home to the largest number of Nile Crocodiles per kilometre in the world, the Luangwa is a battleground like no other. They are the perfect predator. Unchanged from the time of the dinosaurs. And yet, beneath their scaly armour secrets remain.