abstract
annual ring
background
bicolor
bright
brown
circle
closeup
core
cross section
cut surface
dark
detail
forestry
growth ring
industry
lumber
material
natural
nature
pattern
patterned
resource
round
section
semicircle
semicircular
snow
snowcovered
snowy
structure
sustainability
sustainable
texture
textured
timber
tree
tree ring
tree trunk
trunk
twotone
winter
wood
wood structure
wood texture
wooden