Old kilns for firing charcoal in Central Europe. A simple method of obtaining black gold.
Palabras clave
background,
black,
burn,
charcoal,
chimney,
coal,
energy,
europa,
fire,
forest,
hard,
hardwood,
heap,
heat,
industrial,
industry,
log,
making,
manufacture,
material,
nature,
out,
pile,
pine,
poland,
power,
preparation,
production,
rural,
smoke,
dirtied,
stack,
stalk,
structure,
traditional,
tree,
white,
wood,
wooden
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