The image is of a large, weathered wooden signpost in a forest. The signpost is made of a light-colored wood and has a rough, uneven surface. On the signpost, there is a detailed map of a tree trunk with Chinese characters written on it. The map is drawn in black ink and shows the tree trunk in various stages of growth and development. The background of the image is filled with trees and ferns, indicating that the photo was taken in a natural environment.