Wood – Is it cancer?



This is the third of three pictures with wood/macro theme. The little piece of dried wood once was a piece of a big tree that lost the fight against time and weather this winter. When this is attached to the tree, you see it as a “nest” with lots of dense tiny branches, or as something that looks like a tumor on a big branch or the body itself. I have heard some stories about it being cancer, but I think it also can be some kind of cellular damage done by some insect. Do you know what it is?