khyunglun caves in garuda valley, western tibet

altitude amazing ancient architecture asia asian autonomous bank blue building capital cave caves china city clay complex cultural culture eroded erosion famous garuda guge high hill hills himalaya historical history khyunglun khyunglung kingdom landscape lost mountain national ngari north palace panorama panoramic park plateau range region river rock set shang shangshung shung sight sightseeing sky sunlight sutlej tibet tibetan tour tourism travel valley western