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This article is about the slayer monster. For the superior variant, see Cave abomination.
Cave horror icon

Cave horrors are assigned by Chaeldar, Nieve and Duradel after completing the quest Cabin Fever. Killing cave horrors requires 58 Slayer, a witchwood icon, and a light source (unless a Fire of Eternal Light is lit) to see in the caves.

Cave horrors are often killed for their black mask drops along with a decent rate of hard clue drops.

A witchwood icon must be worn at all times while in close combat with cave horrors; if not worn, they will deal damage equal to 10% of the player's total Hitpoints level rounded down (e.g. 7 damage at 76 HP or 9 at 98). However, a witchwood icon is not required if the player always has Protect from Melee active or is using safe spots.


Cave horrors are found inside Mos Le'Harmless Caves. To get there, players may do any of the following:

Strengths and weaknesses

Cave horrors use a Magic-based Melee attack, so it is advised that players bring Dragonhide armour or other armour that provides Magic Defence bonus. Players must also be wearing a witchwood icon, which can be purchased from any Slayer master. The cave horror will use a scream attack which WILL NOT reduce a player's stats however will deal damage to a player based upon their Hitpoints. Damage calculation (Player's HP level/10) rounded down to the lowest integer. However, the witchwood icon is NOT necessary when fighting them from a distance or when using the Protect from Melee prayer, so a better amulet may be used instead. Since cave horrors are wider than one square, a dragon halberd or a crystal halberd can be very useful as a special attack weapon, and can sometimes be used in the right areas to safespot the cave horrors behind the mushrooms, stalagmites, and boulders. 

Note: It is advisable to keep the witchwood icon in case of a close combat encounter. 


Estimated drop rates are based off 9,397 kills.[1]


Item Quantity Rarity GE market price
Big bones Big bones 1 Always 202


Item Quantity Rarity GE market price
Mithril axe Mithril axe 1 Common 109
Mithril kiteshield Mithril kiteshield 1 Uncommon 1,059
Rune dagger Rune dagger 1 Rare (~1/100) 4,510
Adamant full helm Adamant full helm 1 Rare (~1/100) 1,875 
Black mask Black mask(10) 1 Rare (1/512) 1,010,689


Item Quantity Rarity GE market price
Potato seed 5 Potato seed 1–4 Common 1–4
Onion seed 5 Onion seed 1–3 Common 1–3
Belladonna seed 5 Belladonna seed 1 Common 29
Cabbage seed 5 Cabbage seed 1–3 Common 1–3
Herb seed 5 Toadflax seed 1 Uncommon (~1/30) 374
Herb seed 5 Irit seed 1 Uncommon 27
Poison ivy seed 5 Poison ivy seed 1 Uncommon 11
Cactus seed 5 Cactus seed 1 Uncommon 21
Strawberry seed 5 Strawberry seed 1 Uncommon 18
Sweetcorn seed 5 Sweetcorn seed 1–2 Uncommon 2–4
Herb seed 5 Avantoe seed 1 Uncommon (~1/59) 1,107
Herb seed 5 Kwuarm seed 1 Uncommon (~1/98) 393
Tomato seed 5 Tomato seed 1–2 Rare 1–2
Watermelon seed 5 Watermelon seed 1 Rare 93
Herb seed 5 Snapdragon seed 1 Rare (~1/106) 50,618
Herb seed 5 Cadantine seed 1–2 Rare 1,143–2,286
Herb seed 5 Lantadyme seed 1 Rare (~1/240) 1,803
Herb seed 5 Dwarf weed seed 1 Rare (~1/376) 783
Herb seed 5 Torstol seed 1 Rare (~1/626) 45,770


Item Quantity Rarity GE market price
Grimy guam leaf Grimy guam leaf 1 Common 16
Grimy marrentill Grimy marrentill 1 Common 12
Grimy tarromin Grimy tarromin 1 Common 138
Grimy harralander Grimy harralander 1–2 Uncommon 746–1,492
Grimy ranarr weed Grimy ranarr weed 1–2 Uncommon 6,523–13,046
Grimy irit leaf Grimy irit leaf 1 Uncommon 755
Grimy avantoe Grimy avantoe 1 Uncommon 1,336
Grimy kwuarm Grimy kwuarm 1 Uncommon 1,123
Grimy cadantine Grimy cadantine 1 Rare 1,212
Grimy lantadyme Grimy lantadyme 1 Rare 1,123
Grimy dwarf weed Grimy dwarf weed 1–2 Rare 505–1,010


Item Quantity Rarity GE market price
Nature rune Nature rune 3–6 Common 648–1,296


Item Quantity Rarity GE market price
Coins 250 Coins 44–495 Common Not sold
Limpwurt root Limpwurt root 1 Common (~1/12) 995
Teak logs Teak logs 4 (noted) Common 752
Mahogany logs Mahogany logs 2–4 Uncommon 700–1,400
Ensouled horror head Ensouled horror head 1 Uncommon (1/30) 2,477
Clue scroll (hard) Clue scroll (hard) 1 Rare (1/128) Not sold
Long bone Long bone 1 Rare (1/400) Not sold
Curved bone Curved bone 1 Very rare (1/5,000) Not sold

Gem drop table

In addition to the drops above, this monster has access to the gem drop table.

Show/hide gem drop table
Item Quantity Rarity GE market price
Uncut sapphire Uncut sapphire 1 Rare 611
Uncut emerald Uncut emerald 1 Rare 788
Uncut ruby Uncut ruby 1 Rare 1,381
Nature talisman Nature talisman 1 Very rare 715
Uncut diamond Uncut diamond 1 Very rare 2,914
Rune javelin Rune javelin 5 Very rare 825
Loop half of key Loop half of key 1 Very rare 11,481
Tooth half of key Tooth half of key 1 Very rare 9,055
Rune spear Rune spear 1 Very rare 12,044
Shield left half Shield left half 1 Very rare 65,531
Dragon spear Dragon spear 1 Very rare 37,581