aerial
aerial view
ancient
arid
background
blue
china
color
colored
colorful
desert
drone
famous
gansu
hiking
history
holiday
hot
inspirational
landform
landmark
landscape
mineral
mountain
national park
nature
old
orange
park
patterns
plates
quiet
rainbow mountains
road
rock
sandstone
scenery
scenic
sky
spectacular natural
tectonic
tourism
tourist
travel
unesco
unesco world heritage
view
volcanic rock
wind
zhangye