background
barren
brown
chromic
clay
country
desert
detail
dirt
dirty
drought
dry
dust
earth
ferromagnesium
geological
geology
ground
grunge
iron
land
laterite
luvisol
mars
meadow
mountain
mud
nature
orange
oxidation
oxisol
pebble
pedology
red
rhodustalf
road
rocks
rossa
rust
sand
soil
straw
surface
terra
terrain
texture
textured
tropical
way