abstract
aging
alps
background
bark
bavaria
brown
castle
circle
concentric
cracked
cut
domestic
effect
energy
environment
fire
fireplace
firewood
forest
forestry
fuel
fussen
germany
heat
log
logging
lumber
material
natural
nature
organic
pattern
plant
power
preparation
raw
renewable
resource
ring
rough
round
rural
scene
season
section
shape
slice
stack
stacked
structure
texture
textured
timber
tree
trunk
wall
winter
wood
wooden
woodpile
years
yellow