background
barren
blaze a trail
break
construct a road
cross section
cut a path
ferrous
ferrous iron
geology
ground
grunge
hew out a path
iron
land
laterite soil
make a road
mineral
mountain
mud
natural
nature
open a road
pebble
pedology
red color
red earth
rock
rough soil
rust
sand
sky
soil
stone
surface
terra
terrain
texture
thailand
tropical