young hiker backpacker woman using trekking poles enjoying the nuptse 7861m mountain during high altitude acclimatization walk.

acclimatization activity acute altitude ams backpacker backpacking base bazaar camp climber climbing clothing clouds ebc everest extreme female glasses high hiker hiking himalaya himalayas landscape layer mountain mountains namche nature nepal nuptse outdoor outdoors peak people poles protection scenic sickness sport sun tourist travel trek trekker trekking vacation walking woman