The Mushroom Rock Road is a pathway that you can take from the Djose Highroad / Mi’ihen Highroad area.
The area is involved in a large battle when the story takes Yuna and the team to the precipice of Mushroom Rock. Refer to the strategy guide and walkthrough section for additional details:
You may run into a Dark Aeon here if you have obtained the Magus Sisters. The Dark Aeons are the Dark Magus Sisters.
