adventure
arid
asphalt
backdrop
background
barren
brown
china
clay
climate
desert
dirt
dried
drought
drouth
dry
dryland
dryness
earth
ecology
environment
erosion
ground
heat
highway
hill
land
landscape
mountains
natural
nature
orange
road
sand
sandy
scenery
scenic
soil
terrain
tourism
transportation
travel
washout
wasteland
wilderness
yellow