high altitude

Translations
высокая высота
The climbers faced challenges at high altitude.
Альпинисты столкнулись с трудностями на высокой высоте.
Definitions
High altitude refers to a location or environment that is significantly above sea level, typically defined as being at least 2,400 meters (about 8,000 feet) above sea level, where the air pressure is lower and oxygen levels are reduced, potentially affecting human physiology and activities.