The Rebirth of Nerathus
Darkwood is a wood imbued with magical properties, perhaps from the Feywild. The wood itself is only half as heavy as traditional lumber, but is much harder. If worked properly, it can be as strong as steel while having only a fraction of its mass. These properties make it ideal for ship building, town building, and use in weapons. As of now, the only known place to harvest this lumber is in The Black Forest.