- "There are dragons living in the Casba Cave. These dragons have gems in their heads!"
— Resident in Uzo.
Casba Cave is a dungeon on the planet Motavia in Phantasy Star. It is the home of the Blue Casba Dragon, and is also the only method of accessing the town of Casba before the hovercraft has been found.
Layout
Casba Cave is a multi-floor dungeon that is known among the locals as a dragon den. There are two boss encounters in the cave: The Red Dragon hiding behind a hidden passage on floor 1 is the keeper of a light saber, and the Blue Casba Dragon residing on floor 3 which is the keeper of the Amber Eye, a valuable artifact that can be traded for the Eclipse Torch in the Corona Tower.
Floor 1

Key
marks the entrance and exit to the dungeon.
marks an impassable wall tile.
marks a traversable tile.
marks a hidden path that is traversable.
marks the stairs going down to Floor 2.
marks a battle against a Red Dragon. The reward for defeating it is a light saber.
Collectibles
: 500 meseta
Floor 2

Key
marks an impassable wall tile.
marks a traversable tile.
marks a hidden path that is traversable.
marks the stairs going down to Floor 3.
marks the stairs going up to Floor 1.
Collectibles
: 5,000 meseta
Floor 3

Key
marks an impassable wall tile.
marks a traversable tile.
marks the stairs going up to Floor 2.
marks a battle against the Blue Casba Dragon. The reward for defeating it is the Amber Eye.
Collectibles
: 100 meseta
: Booby trapped empty chest
: 100 meseta