Abyssal Wood is a Vampire Counts military recruitment building in Total War: Warhammer. Sylvania's woods are dingy copses of twisted, half-rotted trees that claw what nourishment they can from the bone-strewn soil.
Sylvanians know not to venture into the woods. Even lumberjacks go only in large parties when wood is at its scarcest, and even then chopping down a tree could easily bring about a bloody retaliation. Of course, there are abyssal things there, even more terrifying than the trees themselves. Such things are sought by the Midnight Aristocracy, who wish to add them to their hordes.