Herds of over a thousand buffalos made a six-hour trek to the river during a scorching heatwave that saw temperatures reach a record height of 46 degrees Celsius.
This video, filmed on September 19, shows the spectacular migration that took place at Kruger National Park in South Africa.
With other sources of water depleted, the buffalos began their move from about 30 kilometres away towards the river and could be detected some distance off by the presence of advancing dust clouds. The entire migration took six hours, at the end of which the buffalos were seen gulping down water so desperately they showed no concern when a crocodile floated right up.