In the northern woods, the sun does not penetrate through the canopy of leaves to shine on the trunks of the trees. Because we are so far from the equator, the sun does not shine, all that often, on the north side of the tree trunks. A perfect place for Lichen to grow. We have been house sitting and watching over two of our granddaughters. I will be catching up, on commenting, in the next few days. Zoom will provide better details. Thanks for stopping by, taking a look and for all your previous favs and comments. They are very much appreciated. Dana