The Mirage Cavern was the home of Amphibian Type Monsters.
Frogs, Toads, Salamanders, and Caecilians were the local monsters of this dungeon. The Mirage Cavern had fifty floors with different types of environments.
So far, the students of the academy had only managed to reach the 40th Floor of this Dungeon, but it took them a month to get that far. William only had a week to clear the Dungeon, but he was not too worried that he wouldn't make it in time.
(A/N: Three days inside the dungeon is equivalent to a day in the outside world)
Just like William, some of the students also decided to choose the Mirage Cavern to earn merit points for their test. They planned to go as far as they could within the time limit, but everyone had agreed that they wouldn't go past the 33rd Floor where the Blaze Salamanders were located.