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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 248


Item Quantity Rarity GE market price
Mithril axe Mithril axe 1 Common 113
Mithril kiteshield Mithril kiteshield 1 Uncommon 1,065
Rune dagger Rune dagger 1 Rare (~1/100) 4,518
Adamant full helm Adamant full helm 1 Rare (~1/100) 1,863 
Black mask Black mask(10) 1 Rare (1/512) 1,673,440


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 33
Cabbage seed 5 Cabbage seed 1–3 Common 1–3
Herb seed 5 Toadflax seed 1 Uncommon (~1/30) 1,089
Herb seed 5 Irit seed 1 Uncommon 91
Poison ivy seed 5 Poison ivy seed 1 Uncommon 349
Cactus seed 5 Cactus seed 1 Uncommon 283
Strawberry seed 5 Strawberry seed 1 Uncommon 26
Sweetcorn seed 5 Sweetcorn seed 1–2 Uncommon 4–8
Herb seed 5 Avantoe seed 1 Uncommon (~1/59) 1,417
Herb seed 5 Kwuarm seed 1 Uncommon (~1/98) 977
Tomato seed 5 Tomato seed 1–2 Rare 1–2
Watermelon seed 5 Watermelon seed 1 Rare 256
Herb seed 5 Snapdragon seed 1 Rare (~1/106) 59,705
Herb seed 5 Cadantine seed 1–2 Rare 1,169–2,338
Herb seed 5 Lantadyme seed 1 Rare (~1/240) 1,340
Herb seed 5 Dwarf weed seed 1 Rare (~1/376) 1,386
Herb seed 5 Torstol seed 1 Rare (~1/626) 78,283


Item Quantity Rarity GE market price
Grimy guam leaf Grimy guam leaf 1 Common 17
Grimy marrentill Grimy marrentill 1 Common 14
Grimy tarromin Grimy tarromin 1 Common 161
Grimy harralander Grimy harralander 1–2 Uncommon 706–1,412
Grimy ranarr weed Grimy ranarr weed 1–2 Uncommon 7,938–15,876
Grimy irit leaf Grimy irit leaf 1 Uncommon 897
Grimy avantoe Grimy avantoe 1 Uncommon 1,611
Grimy kwuarm Grimy kwuarm 1 Uncommon 1,356
Grimy cadantine Grimy cadantine 1 Rare 1,298
Grimy lantadyme Grimy lantadyme 1 Rare 1,146
Grimy dwarf weed Grimy dwarf weed 1–2 Rare 808–1,616


Item Quantity Rarity GE market price
Nature rune Nature rune 3–6 Common 774–1,548


Item Quantity Rarity GE market price
Coins 250 Coins 44–495 Common Not sold
Limpwurt root Limpwurt root 1 Common (~1/12) 897
Teak logs Teak logs 4 (noted) Common 924
Mahogany logs Mahogany logs 2–4 Uncommon 640–1,280
Ensouled horror head Ensouled horror head 1 Uncommon (1/30) 2,324
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 869
Uncut emerald Uncut emerald 1 Rare 898
Uncut ruby Uncut ruby 1 Rare 1,582
Nature talisman Nature talisman 1 Very rare 738
Uncut diamond Uncut diamond 1 Very rare 3,021
Rune javelin Rune javelin 5 Very rare 685
Loop half of key Loop half of key 1 Very rare 8,084
Tooth half of key Tooth half of key 1 Very rare 14,233
Rune spear Rune spear 1 Very rare 12,068
Shield left half Shield left half 1 Very rare 65,644
Dragon spear Dragon spear 1 Very rare 37,239