Dragon Lair Cave is a bonus dungeon unlocked after the player beats either of the two storylines. The only way to reach Dragon Lair Cave is by Journey Pig. Inside, they player will face all four elemental dragons. Once defeated a fifth dragon, Radian, appears to battle the player. When Jack Russell first arrives in Dragon Lair Cave someone or something used Jack's own mouth, much to Jack's displeasure, to inform Jack that they same gods that created Radiata also created Dragon Lair Cave and that it is a place for fun and challenge.