|Main Music||7th Realm|
|Levels||Lower and upper|
|Strongest Monster||Steel dragon|
|Inhabitants/Race||Dragons, Giants, Demons and Dogs|
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To enter the dungeon, players must pay Saniboch, who is outside the entrance, 875 coins each time they wish to enter the dungeon. You will also need an axe to cut the vines blocking the path (requiring level 10 Woodcutting). A Bronze axe spawn can be found in the Brimhaven bar near the dungeon.
There are also stepping stones in the dungeon that require level 12 Agility to pass. If you fail it (which is quite rare), you will get hit by a low amount of damage. To get further in the dungeon, you will need at least a Woodcutting level of 34.
The cost of entering the dungeon can often be easily recouped, from the drops of the many powerful monsters in the dungeon like demons, giants, and dragons. The dungeon is a popular destination for players seeking to fight greater demons, black demons, red dragons, or metal dragons.
The Wise Old Man travelled to Karamja and ventured into Brimhaven Dungeon, which few people at the time dared to enter. Afterwards, he advised the locals to charge any adventurer who wished to enter the dungeon, which is why Saniboch charges a fee of 875 coins for any player to enter.
Another entrance to the dungeon can be found west of Tai Bwo Wannai. Guarded by Saniboch's sister Banisoch, a one-time fee of 5,000 trading sticks must be given to her before she will allow players to use the entrance. This entrance takes players to the bronze dragon area.
The dungeon can be reached by sailing from East Ardougne to Brimhaven, for a fee of 30 coins or for free when using the Ring of charos. Another sea route can be taken from Port Sarim to Musa Point, again requiring 30 coins or the Ring of charos for a free trip. However, it is a much longer walk to the dungeon entrance from Musa Point than from Brimhaven. Alternatively, one can charter a ship to get to Brimhaven (the Port Sarim-Brimhaven charter ship ride costs 1,600 coins).
Teleportation is also practical:
- Teleport to House if the Player-owned house is in Brimhaven or if using a Scroll of redirection. This is by far the quickest way to get to the dungeon, and best to get your items back if you die.
- Using a Tai bwo wannai teleport scroll and running west to the alternate entrance. This requires paying Banisoch a one-time fee of 5,000 trading sticks, and takes players to the bronze dragon area.
- Spirit Tree if the player has a fully grown spirit tree behind the Brimhaven Agility Arena.
- Amulet of glory to Karamja, then run west then south.
- Fairy ring code CKR and then north to the dungeon.
- Teleport to Ardougne—Take boat to Brimhaven (costs 30 coins). Walk south to the dungeon.
- Wild dogs
- Moss giants
- Fire giants
- Greater demons
- Black demons
- Baby green dragons
- Baby red dragons
- Red dragons
- Bronze dragons
- Iron dragons
- Steel dragons
- Saniboch - The guard to the main entrance of this dungeon. Players must pay him 875 coins to enter.
- Banisoch - Saniboch's sister, who guards another entrance of this dungeon west of Tai Bwo Wannai.
- Hieve - The elder cousin of Nieve, he guards a massive metal dragon chamber and only allows those with the respective slayer task to enter.
- Wild dogs were removed from the majority of the dungeon with the Diverse Dungeons update on 27 April 2017.