Moss growing on a tree (Unsplash)

Bill Yeck Park, Dayton, United States

Public domain photograph of tree trunk, free to use, no copyright restrictions image - Picryl description

A close up of the bark of a tree.

This image is from Unsplash and was published prior to 5 June 2017 under the Creative Commons CC0 1.0 Universal Public Domain Dedication. Media published on Unsplash from 5 June 2017 onwards is not considered to be freely licensed.