Marrow (substance)

Marrow - mysterious and extremely dangerous substance that filling the inners of the mountain beneath the Old Mountain House.

Description
"Marrow is a reddish-black substance which materializes in places where the space between realities and perception have been bent or broken, wounded. Its purpose is to seal that wound. It's like...reality blood. Also called "God Blood" by some.

It has mutagenic properties causing horrific and irreversible damage or transformation. Contact can lead to such things as gigantism, while ingestion may lead to such things as liquefaction (not always fatal). It is best avoided even in diluted forms.

It makes Marrow a very useful commodity for those who would seek to do biological experiments with it. Hideous, hideous experiments. "(c)official lore