A photograph taken late this afternoon in McKay Reserve. The tracks are caused–as I understand it–by the larvae of certain insects. The specific tree known as “Scribbly Gum” varies according to which region of Australia you are in, but here it refers to Eucalyptus Haemostoma, a vital component of the Pittwater Spotted Gum Forest ecological community. The cool thing (I think) about this photo is how it shows how the bark peels off showing different colours and sets of tracks in the bark.