dunhuang yadan devil city

asia asian automobile background beautiful beauty black blue brown china chinese city clay cloud colorful colour desertification devil dry dunhuang east eroded erosion fall famous feature forest formation geologic geological geology ghost gunsu hill horizontal land landform landforms landmark landscape mechanical mountain natural nature outdoor province red river road rock rocks scenery scenic sightseeing silk sky stone sunset tour tourism tourist town transformed travel tree trip view wallpaper water weathering west wind xinjiang yadan yardan yardang yellow