Inonotus obliquus? growing on
aka clinker polypore
A large White Birch, over two feet
diameter, growing on private property near the road. About 15' up, on a
branch about 8" in diameter is what looks to me like Chaga. Picture taken
at full 12x optical zoom and 5 mp size then cropped and resized and compressed.
A bit from the side
The base of the tree has a rot hole that
goes to the center of the tree.
The quest goes on...