A little town North of Mileth is Piet. Piet's brackish water bring crabs, turtles, and brawlfish into it's dungeon. Of course, at the bottom of this dunegon (below level 11) you will find the Crossroads that connect to the bottom Abel dungeon (10-1). 

Piet Dungeon is great hunting for those level 15 until around 100 where experience starts to drop off.