The Underbog is a dungeon in the World of Warcraft game. The level range for the normal dungeon is 61-70. The only achievements you can get in this dungeon are the ones for completing. There are no achievements awards for individual boss encounters for making him to do something. The location of the entrance to The Underbog is in the Zangarmarsh zone on the continent of Outlands. The instance was released in the Burning Crusade expansion. The dungeon contains 4 bosses. The end boss of The Underbog is The Black Stalker.
Running this dungeon increases your reputation for the Cenarion Expedition faction. How much you get depends on the level and the race of the character. Humans have a racial bonus of diplomacy which means they get more rep from killing and doing things than the other races.
The Underbog is the right most dungeon as you enter the area with the tube behind you.
TomTom Location Coordinates for Entrance : /way 54,34