The Spirit was carved where a limb came off the tree.  As the tree covers the wound this spirit will disappear.
Terry Chapman  (unrelated to the name of the creek) carved a these spirits in the trees.

This tree stump turned into a fort with a big spirit on the side. Terry Chapman
(unrelated to the name of the creek) carved a these spirits in the trees.

This gives you a sense of how big some of these spirit are.
Terry Chapman (unrelated to the name of the creek) carved a these spirits in the trees.

These two trees were part of the Chapman Creek trail.  Terry Chapman
(unrelated to the name of the creek) carved a these spirits in the trees.