What do you think we are seeing here? Just a section through an old tree?That would be right…and wrong. The right hand half of the picture is indeed a section through the trunk of a tree. But on the left we have a section through an old, tough bracket fungus.
We think of fungus as soft, like the mushrooms we eat. But this shows a fungus over time can become tough and hard enough to section just like wood.
You can see the full thing below.