The Cavern of Fire is a map that is unlocked after defeating the Unova Gym Leaders. This map is Acessed via the Cavern of Spiders and is the last map in this path.
Pokemon that can be accessed here: (WIP)
Purrloin: Common
Blitzle: Common
Trubbish: Common
Roggenrola: Uncommon
Slugma: Uncommon
Darumaka: Common
Abra: Uncommon
Terrakion: Rare