In reality, these markings indicate a change in the direction of the trail. But in my imagination, this tree is prepared for whatever battle may come its way.
This is an imperfect effect. I know you're not supposed to attempt flowy waterfall pictures without a tripod, but I did it anyway. I tried to fix the focus problems in Photoshop, and that was imperfect, too. But it was still fun to play around with the effect and the software!