Going with the sap flow
Introduction
The photograph on this page of Going with the sap flow by Neil Owen as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Neil Owen Taken: 22 Sep 2017
A large bough of an oak has parted company and shed its bark, leaving some splendid flowing grain. The image does not give much scale, but the section here was about two feet in thickness. Image converted from colour original.