Lhotse and NuptseA tiny bit of Everest's slope can also be seen here, if you squint and get really creative.
It's true. My pack was too heavy, my knees were too fragile, my legs were too weak, and my feet were too delicate. But on a 1000-meter ascent, it's the altitude -- not the fatigue -- which you can't bear. Long before the symptoms of Acute Mountain Sickness (AMS) set in, the thinning of the air around you as you climb is palpable. At 1,000 meters, the oxygen delivery rate is still 88% of that at sea level; by 3,500 meters that has dropped to 60%, and at 5,000 meters each breath is worth just half what you are accustomed to.
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