A log in the twilight

It was in the late evening. I was on my own in the park. I found this log along the foot path. This is the end of a big tree. I am sure it used to be a house of hundreds of wild birds. It used to be a shadow tree. Now it is just a log. What would be the next?

Photo: ND 0.2 and 0.4 , Circular polarizer filters