adventure
arid
background
change
climate
concept
cool
countryside
desert
drought
dry
dune
dust
ecology
environment
erosion
escape
freedom
global
grass
green
heat
horizon
hot
illustration
land
landscape
metaphor
natural
nature
opposition
rain
road
safari
sahara
sand
season
sky
split
summer
sun
symbol
tourism
travel
tree
warming
wasteland
water
weather
wet