This article is from the Final-Fantasy and other Square Soft Games FAQ, by email@example.com (Nick Zitzmann) with numerous contributions by others.
In the New Game + game, and _only_ a New Game + game, pressing the
talk/selection button (default is A in the SNES release, and X in the
PSX release) in front of the Right Telepod will instantly warp the party
to the Day of Lavos with no return.
It doesn't appear in regular new games, since a new adventurer would
easily be overpowered by Lavos.
You can get some interesting endings by using this...