When we decided to go on safari in Tanzania, we realized we would be visiting during prime river crossing times during the Great Migration (with best times to view the migration typically being mid-July to early-September).
While the mass wildebeest migration is an on-going event year round as the herds follow the rains in a never-ending loop (primarily throughout Tanzania), the Mara River crossing event occurs at a limited window when the herds head north to Kenya during the dry season and then return a few months later when the rains move south.
This event is exciting for visitors (particularly photographers) as river crossings are incredibly dangerous and chaotic. The water is rushing, rocks underneath the surface can cause the animals to break limbs, and the large volume of crossing wildebeests (think thousands if not tens of thousands at a time) make for targets for predators including crocodiles, lions, and more. If there is any experience that illustrates the raw beauty of Africa of life and death, it would be a river crossing- and we really wanted to see one.
As we successfully witnessed a river crossing migration event during our trip to the northern Serengeti, we thought we'd share a bit more about what you can expect!