At well over 4000m above sea level, the air is thin and cold in this Himalayan valley. Only specialised animals can survive here - and the yak is one of them. These shaggy beasts just about find the nutrients they need, but it's relentless work.
At well over 4000m above sea level, the air is thin and cold in this Himalayan valley. Only specialised animals can survive here - and the yak is one of them. These shaggy beasts just about find the nutrients they need, but it's relentless work.