Undersea Tunnel B3 iz_dun02 Masmorra Midgard Byalan IslandMapa-múndi: Lv 11~50Monstros Nv 1–53 N 400 × 400 células · Portais: 2 No mapa-múndi: Undersea Tunnel F3 (Midgard) Regras do mapa Sem memo Monstros 6 Black Mushroom Lv 1×15⟳ 3 min – 4 min 30 s Hydra Lv 14×40 Cornutus Lv 23×60 Marse Lv 31×40 Obeaune Lv 31×40 Merman Lv 53×1⟳ 30 min – 50 min Saídas 2 Undersea Tunnel B2iz_dun01 Masmorra Undersea Tunnel B4iz_dun03 Masmorra