Towerwood is a type of wood added by the Twilight Forest mod. It is the primary block type that makes up Dark Towers. It is a more reddish color than vanilla Minecraft's wood planks. Towerwood comes in five variations: Towerwood, Encased Towerwood, Cracked Towerwood, Mossy Towerwood, and Infested Towerwood. Infested Towerwood will spawn Towerwood Borers when broken or another borer is provoked by the player, similar to the Silverfish monster blocks. Only Towerwood planks and Encased Towerwood are craftable, making Cracked, Mossy, and Infested Towerwood a limited resource much like the respective forms of Stone Brick found in Strongholds in the Overworld.
Towerwood is the most resistant form of wood available in Hexxit, requiring a similar amount of time to mine it with a diamond axe to that of Obsidian and a diamond pickaxe. It is also much more resistant to fire than vanilla wooden blocks and can possibly take up to a minute or so to burn through, assuming the fire doesn't die out first.
Towerwood may be made from Darkwood.
Encased Towerwood may be crafted using Towerwood Planks.