long years of operation walking across the wooden threshold to the house caused the frame to abrade deep into the wood. only knot

abrade abrasion abrasive aged annual background barn beam boots brown building carpentry caused closeup construction cottage deep design door doors due durability entrance frame hardness house industrial industry knot long manufacture manufacturing mat material natural object old only operation pattern pine plank polishing protrudes protruding ring rings rustic shoes smooth spruce sun texture threshold used vintage walking wood wooden years