Free high resolution photo of an old plywood board with a bunch of knots in the wood. This picture shows the surface of the old weathered wood. You can see the wood grain as well as a large number of knots dotting the surface and creating an interesting pattern. The wood is old and weathered to almost a gray color. Great background, wallpaper, or texture image for a website, blog, computer, phone, scrapbooking or Photoshop. Free image for any use.