yumem gate

ancient asia asian background barier beautiful beauty blue brown china chinese city cloud colorful desert desertification dry dunhuang dynasty east erosion famous feature gate geologic geological geology gunsu han hill historic history horizontal land landform landforms landmark landscape natural nature outdoor province qaidam red river road rock rocks ruins sand scenery scenic sightseeing silk sky stone sunset tour tourism tourist town transformed travel tree trip view wallpaper weathering west wind xinjiang yadan yardan yardang yellow yumen yumenguan