I see two things when you cut page 101 vertically down the middle between Yorah's eyes and then swap the halves so that the outside edges join in the middle:

1. The round picture frame is now a complete circle and looks like a rifle's cross-hairs pointing to the tree hole with creatures around it. A hint that the creatures are hidden in tree holes?

2. It looks like a face in the lower half of the picture. Yorah's arms now look like ears with eye's right below them. Pook?