What kind of stump? Chaga is an interesting medicinal fungi species that grows mostly on weak or dead birch trees - it is a black gooey mess somewhat like what you show. Chaga was also important for to early fire monkeys as it makes a good tinder.
As if that wasn't enough, a dog then peed on the tiny ad.
Looking for cold-climate growers to join a GOOF livestream panel (Missoula)