Undersea Tunnel B5 iz_dun04 Masmorra Midgard Byalan IslandMapa-múndi: Lv 11~50Monstros Nv 14–53 N 280 × 300 células · Portais: 1 No mapa-múndi: Undersea Tunnel F5 (Midgard) Regras do mapa Sem memo Monstros 6 Hydra Lv 14×18⟳ 4 min 54 s – 7 min 51 s Marine Sphere Lv 28×10 Swordfish Lv 30×10 Deviace Lv 47×3 Strouf Lv 48×50⟳ 10 min – 15 min Merman Lv 53×52⟳ 5 s – 2 min 50 s Saídas 1 Undersea Tunnel B4iz_dun03 Masmorra