serengeti great migration has been listed as one of the seven natural wonders of the world. not only does it offer incredible views of the plains dotted with huge herds of wildebeest, zebra, and gazelle, but the rivers are often infested with large nile crocodiles lying in wait. some of the best safari opportunities in the world are found here, across a landscape made up of volcanic grasslands and vast plains interrupted by rocky outcrops, rivers, and forests. visiting the right area in the right season will treat travellers to astonishing sightings of this natural phenomenon.