Experience one of Tanzania's most iconic natural events along the Serengeti Migration Trail. East Africa's 'Great Migration' is one of the world's largest mammal migrations and a true sight to behold. Each year, thousands of wildebeest give birth to their young before crossing the grassy plains into Kenya's Masai Mara in search of food and water. They gallop across rivers where crocodiles lay in wait and battle predators such as lions and hyena along the way. While the migration's timing isn't guaranteed, it typically begins around May.