Dark Abyss is an individual dungeon located northwest of Bucharest. * Entrance Fee or Key: [Furious Sea King's Wraith], purchasable from the market * Minimum Level: your Main Character must be level 155 or higher to enter this dungeon * Formation: Full * Monsters: Scale to Main Character's level * Battle Type: TBS Skirmish * Time Limit: 40 minutes * Extend Time: For 2 Atlas Ore, you can extend the allotted time by 10 minutes * Reward: for clearing dungeon (killing all monsters) * Boss: 1 boss and 3 mini-bosses * Cooldown (CD): 20 hours