Fiery Path is a cave that links the Northern and Southern sections of Route 112. There are some boulders blocking an offshoot of the path, but you can't access them until you unlock the ability to use HM04 Strength outside of battle, so return here after defeating Flannery. The two items in there are a Fire Stone in the Southern End of the offshoot, and TM06 Toxic in the Northern End of the offshoot.