famous gurugyam bon monastery in guge kingdom, western tibet

ancient architecture asia bon bonpo buddhism building cave china citadel city cultural culture eroded erosion famous fortress garuda gompa guge gurugem gurugyam gurugyum hill himalaya himalayan historical khyunglung kingdom kyunglung landmark landscape lost monastery mountain national ngari outdoors palace park ruins sandstone shang shangshung shung sightseeing tantric tibet tibetan travel valley western