abstract
age
annual
background
bark
broken
brown
circle
closeup
concentric
core
cross
cut
dark
deep
detail
forest
forestry
grain
growth
history
industry
isolated
life
line
log
lumber
macro
material
nature
oak
old
orange
organic
pattern
pine
ring
round
saw
section
shape
slice
stump
surface
texture
timber
tree
trunk
wood
wooden