Underground Waterway

The Underground Waterway is a cave filled with water and an explorable area in both Final Fantasy IV and Final Fantasy IV: The After Years. In Final Fantasy IVs original Super Nintendo version, the location is named Watery Pass, and in the PlayStation version, it is named Water Cavern'.

The Underground Waterway is unique in that it is a single area that is divided into two caves. The first portion ends with an exit to a small valley area on the World Map. To the north is another cave entrance, which leads into the northern part of Underground Waterway. This portion starts with a jump down the waterfall. In Final Fantasy IV, the Underground Waterway is the first place to have a Save Point.

Final Fantasy IV
In Final Fantasy IV, Cecil and Rydia pass through the Underground Waterway in their search for the Sand Pearl. In the first room, they meet Tellah, who is a blocking the wooden bridge, preventing Cecil and Rydia from progressing. Tellah refuses to let them pass because he says that it is too dangerous with all the monsters in the area. However, if the party has talked to Rosa in Kaipo, Tellah realizes that Cecil is wielding the Dark Sword. He asks for their help in finding his daughter, Anna, who ran off to Damcyan to meet with Edward. Tellah agrees to join the party, and the three of them continue in the Underground Waterway.

On floor B2F, the party enters a camp site. Tellah sets up a tent and says that they should get some rest for the the battle ahead. That night, as Rydia is sleeping, Tellah and Cecil sit around a campfire and discuss a few things; they first talk about how Rydia is a Summoner, to which Tellah says that she has great potential. Both Tellah and Cecil then further introduce themselves, and each of them elaborate on their reason for traveling to Damcyan. Tellah provides a brief description of the boss that lies ahead.

At the end of the Underground Waterway, they fight the area's boss, Octomammoth.