Free high resolution close up photo of a knot in a piece of wood. This picture shows a board or milled piece of wood with a clearly visible knot. The knot almost looks like an eye to me. You can see variations in the color of the wood grain from weathering and where the stain has worn off. Great background, wallpaper, or texture image for a website, blog, computer, phone, scrapbooking or Photoshop. Free image for any use.