This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
photoshop texture noise emboss seamless zaphad creative commons free blackandwhite outdoor black and white photoshop noise and emboss. The way you get them seamless is to filter other offset and clone stamp the joins. Offset it again and repeat for the part you missed first time around. If this is rotated the fine grain will be