Undersea Tunnel B1 iz_dun00 Masmorra Midgard Byalan IslandMapa-múndi: Lv 11~50Monstros Nv 1–21 N 400 × 400 células · Portais: 3 No mapa-múndi: Undersea Tunnel F1 (Midgard) Regras do mapa Sem memo Monstros 6 Black Mushroom Lv 1×5⟳ 3 min – 4 min 30 s Plankton Lv 10×65 Kukre Lv 11×15 Hydra Lv 14×15 Vadon Lv 19×15 Marina Lv 21×45 Saídas 2 Byalan Islandizlu2dun Campo Undersea Tunnel B2iz_dun01 Masmorra