|Main Music||Beneath the Stronghold, Nether Realm, Troubled Waters|
|Strongest Monster||Thermonuclear smoke devil (level 301)|
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The Stronghold Slayer Cave is a massive dungeon located beneath the Gnome Stronghold. It contains many of the Slayer monsters that are commonly assigned to players. The cave is located near Nieve (Steve after the events of Monkey Madness II). Anyone can enter the dungeon, but players can only attack the Slayer monster they were assigned, and only while the task has not been completed. The Slayer ring can teleport you to the entrance of the cave.
While a dwarf multicannon can be used in the dungeon, it cannot be used in watery areas. This means that it cannot be placed in the southeastern sector of the cave (waterfiends, gargoyles, abyssal demons and nechryaels), along with the western section of the cave (black dragons, black demons and blue dragons). Black dragons can still be cannoned on the lava islet.
All aggressive monsters in the dungeon, however, can attack the players. Even when attacked by a monster, a player cannot retaliate unless the monster is part of the player's assignment. Only bloodvelds, nechryaels, abyssal demons, cave krakens (and their boss variant), kalphites and the smoke devils (and their boss variant) are not aggressive in the dungeon.
Within the centre of the kalphite cavern, players can search a dead entomologist for his diary, which explains the presence of the kalphites.
Around the dungeon, there are plenty of roots at the caverns in the middle of the dungeon, which can be jumped over, essentially serving as a "barrier" of sorts; players and monsters can still attack over them. There is a small side path at the northern hellhound room where some roots can be cut through. This will require a woodcutting axe of any type, and does not have any requirements. Using this path is strongly advised if you do not have a nosepeg or slayer helmet, as you will have to run through three rooms of Aberrant spectres which will deal heavy damage and drop your combat stats to extremely low levels if you do not have any protection against them.
Players who enter the smoke devil rooms must be wearing a face mask or a slayer helmet, or they will start coughing for 20 damage every 15 seconds. If they have less than 20 hitpoints, they will wheeze instead and will be reduced to 1 hitpoint.
The dungeon has two Agility shortcuts:
- The stepping stones at the cave kraken area, requiring 57 Agility to use. This shortcut will take players to another area in the same cavern that has more cave krakens. The stepping stones leading to the reserved area can be boosted; there is no requirement when exiting the area.
- The mud pile south of the entrance, requiring 72 Agility to climb over. This shortcut allows for players to skip through several hazardous monsters and reach their destination faster. Players are required to have the Agility level to climb to the Nechryael side, but can climb back to the Bloodveld side without any requirements.
|Location on World Map|
|Eagles' Peak||←||Stronghold Slayer Cave||→||Gnome Stronghold Agility Course|
There are various ways to get there:
- Use a Slayer ring to teleport directly to the entrance by Nieve.
- Use the Gnome Glider to Ta Quir Priw, which will take you to the Grand Tree. Exit the Grand Tree and run south-west to the entrance.
- Use the Spirit Tree to the Tree Gnome Stronghold and run south-west.
Monsters that can be found in the Stronghold Slayer Cave include:
|Monster||Image||Combat level||Slayer level||Slayer XP||Quantity|
|Ankou||75, 82, 86||1||60, 70||6|
|Baby black dragon||83||1||80||3|
|Monster||Image||Combat level||Slayer level||Slayer XP|
|Thermonuclear smoke devil||301||93||240|
- Attempting to place a Dwarf multicannon around the area where nechryaels, abyssal demons, black demons, gargoyles, blue dragons and waterfiends are will leave a message in the chatbox saying, "The ground isn't very firm around the lake. You can't place a cannon here."
- The dungeon has several similarites to RuneScape 3's Kuradal's Dungeon, as both dungeons' inhabitants can only be attacked on a slayer task, and two agility shortcuts. However, the Stronghold Slayer Cave Dungeon holds boss variants and many more monsters than Kuradal's Dungeon.
- Even though there are kalphites in the dungeon, there is no Kalphite Queen, even though dialogue with a mounted KQ head says that if there is no queen, a larva will quickly take their place. This is most likely for game-related reasons.
- A poll was sent out by Jagex to see if players would like to see an extended area of the dungeon containing blue dragons, black demons and black dragons. This passed and was added into the dungeon.
- Part of the Underground Pass can be seen at the Gargoyles area, as well as Steel Dragons/Fire Giants.