Why Do Planes Avoid This Zone?

Why do all the airplanes in the world avoid flying over this zone? This zone is quite huge, more than five times the size of France, and if we look at a flight radar, we can see an extensive area empty of airplanes. This is the Tibetan Plateau. There are three main reasons why planes do not fly here. Firstly, Tibet is the highest plateau in the world, with an average elevation of about 14,800 feet. It is home to some of the highest mountains on the planet, including Mount Everest. Commercial aircraft fly at an altitude of about 33,000 feet, but in case of an emergency, such as a cabin depressurization, they need to quickly descend to 10,000 feet, which is almost impossible in Tibet because of its height. Secondly, the weather conditions in Tibet are often extremely unpredictable. Strong winds, turbulence, and sudden weather changes make flying over this region dangerous and challenging. Finally, the third reason is the lack of sufficient airports for emergency landings in the area. There are only five airports in Tibet, making flights over this region extremely risky.