This pencil-like sketch of a tree growing among rocks is in the public domain. If your looking for images or trees or maybe a coloring page of a tree, this image could be just what you’re needing. It’s not entirely clear if this is a multi-trunk tree or a pair of trees growing side-by-side. Wither way, I like it for it’s general simplicity and the many possibilities it provides to customize it for your own needs.
This drawing and a number of others were drawn by William Walker (b. 1821) and included in his Handbook of Drawing from 1880.
This image is copyright free and in the public domain anywhere that extends copyrights 70 years after death or at least 120 years after publication when the original illustrator is unknown.