abstract
aging
annual
background
bark
brown
circle
closeup
concentric
cracked
cross
cut
firewood
forest
history
industry
life
line
log
lumber
macro
material
natural
nature
old
organic
part
pattern
plank
process
ring
saw
section
shape
slice
striped
surface
texture
textured
timber
tree
trunk
weathered
wood
wooden
years