Thousands of zebras and gazelles thunder across Tanzania's withering Northern Serengeti plains, gambling their lives by crossing the Mara River, which is full of crocodiles. Newly born calves are stalked the entire way by lions and hyenas for whom the Great Migration represents a meaty buffet.
The ultimate scene of survival, the migration is an annual event timed to the rains that come between July and October. Capturing on all this on camera is no minor feet. These images were collected with the help of a 4x4 and no little courage.