[00:01.75]It's the beginning of winter, high up on the Tibetan plateau
[00:10.44]The temperature will soon drop to minus 40 Celsius
[00:29.7]Out here,life is reduced to a single imperative - survival
[00:44.95]For the argali, the world's largest sheep
[00:49.21]it means searching for a few tufts of grass
[01:08.38]Descending from the hilltops to lower altitudes the argali band together for safety
[01:17.66]Hopefully, down here,they'll be able to find enough food to last them through the rest of the winter
[01:37.43]Although this winter landscape looks barren and forbidding
[01:41.98]Tibet's remote grasslands support a surprising variety of creatures
[01:47.67]Though at this time of year, they can be hard to track down