aged
backdrop
background
biofuel
chopped
countryside
cut
deforestation
detail
dried
dry
eco
ecology
energy
environment
firewood
forest
forestry
fuel
grove
grunge
heap
industry
landscape
log
lumber
many
material
natural
nature
old
outdoor
plant
raw
renewable
resource
rough
sky
stack
sustainable
texture
timber
tree
trunk
warm
weathered
wood
woodland
woods