The image shows a close-up of a tree trunk with a rough, textured surface. The bark of the tree is dark brown and appears to be weathered and aged. On the surface of the bark, there is a cluster of small, yellow-green lichen growing in a diagonal pattern. The lichen is densely packed together, covering the entire surface of a larger tree trunk. The background is blurred, but it seems to be a wooded area with other trees and foliage visible.