Protecting a child’s ball
There has to be an explanation for this picture. As far as we’re concerned, that circle was once a rubber ball that two kids were playing with. For the story to make sense, keep in mind that the kids were in a treehouse.
Suddenly, the ball fell and got caught between branches. Leaves hid the toy and eventually the kids went home. After all, it was just a rubber ball. As time passed by, the branches grew around the ball and kept it inside the tree.