Same place, another record — The game has several zones named Depths within the Mirror here. The main page gathers them: open the main page
Depths within the Mirror
Part of Hall of Illusion (Conquest [Hard]) · Dungeon page: entry, bosses and rewards → · Open interactive map →
Hall of Illusion is not open on the EU/NA servers yet.
Names in other regions: Korean
KR거울 속 심층
Monsters
1
Teleports
4 teleport points — View on the interactive map