I had a birch blow down on my outhouse last week. Turns out the entire tree was infestated with rot fungus. Any sane member of the community would lament the possibility of not having to dig a hole in the ground for regulating the bowels, but as a member of TDPRI my thoughts were "Could this be spalted wood?" This is a picture of the stump and this is a section at the top of the tree It's cut up in four 10' sections and stacked at the moment. The black lines haven't developed yet (if they ever will) but how should I cultivate this wood to get the best spalt? How long should it lie outdoors before sawing and drying? Is this even the right type of fungus? The wood is still hard, it haven't gone punky yet.