In fact , we climbed a few routes on the mountain twice to acclimate to the thin air ( build red blood cells ) , and minimize the heavy carrying loads by making multiple trips .
Then , we descended back to the Main Camp at 14,200 feet .
We climbed a few routes on the mountain twice to acclimate to the thin air ( build red blood cells ) , and minimize the heavy carrying loads by making multiple trips .
Then , we descended back to the Main Camp at 14,200 feet .