Shapely Silhouette

If you carefully peel a clementine (or similar) around the stalk end, a core of pith sometimes pulls out with the skin.  It has a somewhat arboreal structure and I have used it to make abstracts several times in the past.

See here:
https://www.blipfoto.com/search/entries?q=%23pith+%40gen2

This is AT516, my Abstract Thursday entry for Ingeborg's challenge on the theme of 'Shapely'.