Twinmoon Temple

Twinmoon Temple is a location in Romancing SaGa: Minstrel Song, housing one of the Fatestones; the Moonstone.

It is situated deep in the jungle on Walon Isle, which can be accessed by talking to the Geckling boatman between Oapu and Godongo. In order to enter the temple you first need to possess both the Amut Medallion and Eres Medallion.

To reach the Moonstone you need to descend to floor B7 (start on B1). Each floor requires you to kill a specific breed of monster in order to unlock a special floor-tile, which will transport you deeper into the temple.

Once you reach floor B7 you will be met by Zodiac, the guardian of the Moonstone. Defeating this powerful foe will allow you access to the Fatestone.

Trivia

 * A similar dungeon called Two Moon Temple was also featured in Unlimited Saga.