Final Fantasy III/Cave of Shadows

Unei's Shrine
Use Noah's lute (found in the underwater Temple of Time) to wake up Unei, who joins the Warriors of Light.

Ancient Ruins
Unei can remove the rocks that block the entrance to the lower levels. At the bottom, the legendary airship Invincible can be found. It allows to access all the subsequent areas in this page.

Falgabard
Falgabard is the town of the Dark Knights, therefore let's give a look to all the Dark Knight equipment, not only to what is available here.

In Falgabard you can find full equipment for one Dark Knight for free: one Demon shield, two Demon armors and three different Dark Blades. Of such Dark Blades, the most valuable is the easiest to obtain.

Falgabard Cave
Optional dungeon. Access from the town of Falgabard. Some chests can be found in it, but they contain nothing essential (see tables above). The value of this area is training the Warriors of Light in fighting splitting enemies and finding invisible passages.

Lake Dohr
Optional dungeon. Access using the airship Invincible near Tozas. Defeat Leviathan to obtain a Summon spell.

Bahamut's Lair
Optional dungeon. Access using the airship Invincible near the Living Woods. Defeat Bahamut to obtain a Summon spell.

Cave of Shadows
It conceals the Earth Fang, necessary to access the areas in next chapter. It is guarded by a boss.