Dragon's Lair

Dragon's Lair is a cave located in the highlands and possibly connected to Crystal Cave. this area holds another barrier stone

Story
Sonic travels in this area in the pursuit of the last barrier stone, but he battles a dragon in order to reach it. It is unkown what the barrier stone said

Gameplay
Dragon's Lair is a cave where the Earth Dragon lies. It also features thunder dragons that the player can run on

Trivia

 * In the third section of the battle against the dragon, cutting down one of the stone pillars can make quick work of the dragon.