gansu, china - apr 10 2015: colourful hills scenic area of zhangye national geopark (zhangye danxia). the danxia

area asia asian attraction birdary china chinese color colorful colourful conglomerates corridor danxia famous formed gansu geological geopark hexi hills landform landscape mountain national nature outdoor road rock rural sandstones scenic sightseeing silk site tourism travel traveling trip view zhangye