The Stone Castle Dungeon is merely a name the tribe gave it; its true name is lost to history.
Unlike the six newly created and well-functioning dungeons from 300 years ago, the history of the Stone Castle Dungeon is difficult to trace; it's known to be at least a thousand years old.
The dungeon structure is rough, divided into only three layers: upper, middle, and lower.
When the tribe first settled here three hundred years ago, the dungeon's difficulty increased gradually from top to bottom.
However, this situation changed in the past thirty years.
On one hand, the dungeon gradually deteriorated over time, and this ancient fortress is heading towards its twilight end.
On the other hand, it's due to the emergence of the "Chis."
With suffocating speed, it consumed the middle layer, cut off the upper and lower layers, and successfully made the middle layer the most dangerous tier.
