Know the heights
Khunjerab Pass is 4,693 m and Deosai averages about 4,100 m. Most people feel the thin air above 3,000 m.
Go slowly
Spend a night or two at middle altitude, such as Hunza or Skardu, before going higher. Drink plenty of water and avoid heavy exertion on the first day.
Warning signs
Headache, nausea, dizziness and breathlessness at rest are signs of altitude sickness. If they get worse, go down. Seek medical help for confusion or severe breathlessness.
