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"Ah, there it is!" said Clishya, pointing at Frank the entrance to the Dungeon she had spoken about before.
This dungeon was one of the few there were within the Greenwild Region. Each of these dungeons was treated as a "Cardinal Dungeon" as there were four, each one pointing at a certain direction, and which also specialized in a different element based on the cardinal winds.
To the north there was the Wind Dungeon, to the south there was the Fire Dungeon, to the East there was the Earth Dungeon, and to the West, there was the Water Dungeon, all four of them were high-level dungeons that had many floors, the strongest and final Boss being a Rank 8 Monster, often also called the "Cardinal Catastrophes" by the folks.
Check "The Protagnist's Sister Is Actually the Strongest"!