The Flooded Cave is a medium size two-level dungeon in Dahlgur Oasis in Act II of Diablo III. This area must be explored in order to complete the achievement Nooks and Crannies. This area has no related quests or notable NPCs. A Resplendent Chest as well as a Shrine can be found in the second level of the dungeon.
This Cave can be part of an adventure quest Clear the flooded Cave