The Autumn River is a dungeon in Wild Arms 4 that follows the Cerulean Tunnel and precedes Mim'krilu Skyway. Gawn Brawdia ends up in concourse with the party yet again on their way to Buckeye Station. This is also the place that Jude Maverick has his first encounter with Hauser Blackwell, who Gawn chases after. The BGM that plays during this dungeon is over the wind. This is where the optional boss Sapphire Drake can be found and fought if the party has Sapphire Scale in its possession.