yak grazing in front of rongbuk monastery and mount everest

altitude death zone everest base camp geology geopark himalaya himalayas holy mountain landscape scenery mount mountains nature qomolangma rongbuk monastery sacred sagarmatha tibet yak grazing front everest monastery tibet rongbuk himalayas camp altitude zone geology geopark himalaya mountain landscape scenery mountains nature qomolangma sagarmatha snow sky winter travel peak view valley clouds high