Public domain photos

The image shows a close up of a rock with black and white lichen on it, and a person's finger on the left side of the image. The lichen is clustered together on the rock, giving it a unique and interesting texture.

The image shows a close up of a rock with black and white lichen on it, and a person's finger on the left side of the image. The lichen is clustered together on the rock, giving it a unique and interesting texture.Open in library