It is rated as one of the world's most spectacular natural events - every year over a million wildebeest, zebra and antelope migrate clockwise around the Serengeti/Masai Mara ecosystem, taking in two different countries and making time for birthing, courting and mating on the way.
Say the 'Wildebeest Migration' and most travellers picture hundreds of thousands of grunting gnu and elegant zebra, braving predators and charging into croc-infested rivers in an ancient cycle, often literally covering the vast plains as far as the eye can see...
Timing is everything. If you want the best seats in the house, you need to book your place well in advance. When it comes to once-in-a-lifetime journeys to Africa’s vast playground, you definitely want front-row seats to all the legendary spectacles.
Of all the chapters in the story that is East Africa's Great Wildebeest Migration, none is more dramatic than the river crossings. Arriving in wide-eyed anticipation, the herds pile up like an enormous traffic jam at the Grumeti and Mara Rivers, desperate to complete their journey through the Serengeti and back into the Masai Mara. But crossing the murky brown rivers is no easy task. Giant crocodiles have been waiting all year for the herds and things aren't much better for the survivors - big cats lie in ambush on the other side.