[Guild] Deep Sea-drenched Timber Square

In the depths of Margoria, there exists a region known as the Deep Sea. Typically, the depths reach over 200 meters, and are said to contain some sort of mysterious power that can be used to create something special. Among them, it's said that with the loot from the Black Rust who feed in Margoria, one can craft a special timber square. ※ You cannot obtain this knowledge through Processing. ※ Talk to Duncan, the Guild Military Supply Manager in Velia, to obtain this knowledge entry.