amazing
asia
background
china
chinese
color
colorful
danxia
desert
gansu
geological
geology
hill
land
landform
landscape
layers
light
minerals
mountain
nature
orange
outdoor
outside
park
pattern
picturesque
rainbow
red
rock
rock formation
sandstone
scenery
scenic
sight
spectacular
striped
topography
tourism
travel
unique
view
zhangye
zhangye national geopark