Great Gobi National Park, Gobi Desert, Mongolia
The Gobi Desert is one of the driest deserts in the world. Here, during the winter, temperatures can reach -40°C - too cold for liquid water to exist. This poses a critical challenge for the 1,000 or so wild Bactrian camels that live here. These camels, however, have an acute sense of smell and are able to detect moisture from 30 miles away. A lead bull drives his herd towards an area of the desert where wind has blown in snow from Siberia, joining with other herds along the way. When they finally reach it, they begin to eat the snow to quench their thirst.