Umberwood (黒の森, Kuro no Mori?, lit. Black Forest) is a forest in Final Fantasy Dimensions. It's located to the north of Kurgis and to the south of Aulë.
Under the guide of Queen Cilque and people inside Kurgis, the Warriors of Darkness decide to cross the Unberwood to get to Aulë. Traveling inside the forest, they encounter a mysterious Dark Knight whom they think is a ghost.
Spoilers end here.
The mysterious knight fading away