Pockets.
This tangle reminds me of a pocket with a spiral lolipop in it. I wanted to experiment with the various brown pens in my collection, to see how much contrast there was between the various tones.
Zentangle drawn on Strathmore Bristol Vellum using a brown Micron and brown and sepia Copic pens. Shading done with Polychromos colored pencils blended with Copic blending marker.