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For the elite version, see Unspeakable horror (elite).
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Unspeakable horror icon

An unspeakable horror is a Slayer monster found in the north-eastern part of the Mos Le'Harmless caves. The player requires level 58 Slayer, a witchwood icon, and a light source to successfully hunt and kill them. Completion of the Cabin Fever quest is required to access Mos Le'Harmless. Despite having the same Slayer level requirement, they are much stronger than the cave horrors found in the rest of the cave.

Players can buy a witchwood icon from any Slayer Master and must wear it while fighting horrors in close combat. The player can damage them without the icon, but the icon protects against the horrors' scream. Without the icon, the scream reduces stats and life points, similar to the effect of a banshee when fought without earmuffs or a dust devil when fought without a face mask. The deflect melee and protect from melee prayers will not block this damage.

These monsters are aggressive, regardless of combat level. They become docile after 5-10 minutes of staying in the vicinity of the monsters, which can be reset by running out of the area, then returning.

Location[]

Mos Le'Harmless caves - in a cave on the southeast side of the island. Players need a light source (such as seer's headband 4 or a bullseye lantern) to operate in the cave. If a player goes in without a light source, bugs will rapidly bite them hitting 10-100 and can kill the player quickly depending on their number of life points.

Getting there[]

  • Using the charter ship.
  • Using the Big Book o' Piracy option 1, a reward from the quest Pieces of Hate.
  • Teleporting using rum (red) or rum (blue) bought from Honest Jimmy's House of Stuff.
  • Accessing through the fairy ring DIP (requires Fairy Tale III). If using the fairy ring shortcut, the player must first repair the bridges connecting the fairy ring island to the Mos le'Harmless mainland. This will require a total of 8 regular planks and 16 nails of any kind. Each bridge must be repaired from a different side, meaning the player must fix it from the Mos Le'Harmless side as well as the fairy ring island side if it is the first time using the shortcut).

Drops[]

100% drop[]

Item Quantity Rarity GE price
Big bonesBig bones1Always203

Charms[]

No charmGold charmGreen charmCrimson charmBlue charm
79–81%4–5%1–2%13–15%0.2–0.5%
Represents a 90% confidence range based on a sample of 5,230 kills.
1 charm is dropped at a time.
Add data to the log (requires JavaScript).

Main drop[]

Item Quantity Rarity GE price
Coins 10000Coins2,351–12,488Common2,351–12,488
Teak logsTeak logs7–13 (noted)Common735–1,365
Mahogany logsMahogany logs3–7 (noted)Uncommon900–2,100
Monkey bonesMonkey bones(noted)Common556
Raw swordfishRaw swordfish4–12 (noted)Common1,364–4,092
Big bonesBig bones22–28 (noted)Common4,466–5,684
Weapon poison+ (3)Weapon poison+ (3)1Common1,089
Grimy ranarrGrimy ranarr(noted)Uncommon5,580
Grimy dwarf weedGrimy dwarf weed(noted)Rare16,952
Grimy lantadymeGrimy lantadyme(noted)Rare15,102
Poison ivy berriesPoison ivy berries(noted)Uncommon6,526
Ruby ringRuby ring4–6 (noted)Uncommon11,752–17,628
Ruby necklaceRuby necklace3–5 (noted)Uncommon9,606–16,010
CoconutCoconut(noted)Uncommon15,114
Rare drop tableRare drop table1RareNot sold
Black mask (10)Black mask (10)1Very rare1,702,198

Tertiary drops[]

Item Quantity Rarity GE price
Scare TacticsScare Tactics1Rare495,683
Festering journalFestering journal1UncommonNot sold
Sealed clue scroll (hard)Sealed clue scroll (hard)1RareNot sold
Spirit sapphireSpirit sapphire1RareNot sold
Spirit emeraldSpirit emerald1RareNot sold
Spirit rubySpirit ruby1RareNot sold
Long boneLong bone1RareNot sold
Starved ancient effigyStarved ancient effigy1Very rareNot sold
Curved boneCurved bone1Very rareNot sold


Rare drop table[]

This monster has access to the rare drop table.
Luck-enhancing items such as a ring of wealth or luck of the dwarves are not required to access the table.
Show/hide rare drop table
Item Quantity Rarity GE price
Coins 250Coins250–500Common250–500
Uncut sapphireUncut sapphire1Common809
Uncut emeraldUncut emerald1Common2,555
Uncut rubyUncut ruby1Common1,842
Uncut diamondUncut diamond1Common4,843
Uncut diamondUncut diamond45–55 (noted)Rare217,935–266,365
Loop half of a keyLoop half of a key1Common11,053
Tooth half of a keyTooth half of a key1Common11,538
Uncut dragonstoneUncut dragonstone1Uncommon12,077
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare543,465–664,235
Dragon longswordDragon longsword1Common56,212
Dragon spearDragon spear1Rare35,861
BattlestaffBattlestaff180–220 (noted)Rare542,160–662,640
Rune javelinRune javelin5Rare905
Rune platebodyRune platebody1Uncommon37,480
Rune platebodyRune platebody15–25 (noted)Rare562,200–937,000
Shield left halfShield left half1Rare64,399
Dragon helmDragon helm1Uncommon58,601
Rune arrowheadsRune arrowheads113–137Common14,916–18,084
Onyx boltsOnyx bolts135–165Very rare1,003,725–1,226,775
Chaos talismanChaos talisman1Rare1,923
Nature talismanNature talisman1Rare1,473
Water talismanWater talisman65–82 (noted)Rare164,320–207,296
Earth talismanEarth talisman65–82 (noted)Rare12,025–15,170
Fire talismanFire talisman25–35 (noted)Rare5,225–7,315
Raw lobsterRaw lobster135–165 (noted)Common47,655–58,245
Raw sharkRaw shark225–275 (noted)Uncommon321,075–392,425
Big bonesBig bones68–82 (noted)Uncommon13,804–16,646
Dragon bonesDragon bones180–220 (noted)Rare384,480–469,920
CoalCoal200–1,100 (noted)Uncommon22,400–123,200
Gold oreGold ore90–110 (noted)Common52,830–64,570
Adamantite oreAdamantite ore180–220 (noted)Uncommon40,860–49,940
Adamant barAdamant bar14–16 (noted)Common24,654–28,176
Adamant barAdamant bar135–165 (noted)Rare237,735–290,565
Runite oreRunite ore90–110 (noted)Rare127,710–156,090
Rune barRune bar(noted)Common8,955
Rune barRune bar45–55 (noted)Rare134,325–164,175
Grimy torstolGrimy torstol90–110 (noted)Uncommon485,010–592,790
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon161,010–196,790
Super restore (4)Super restore (4)45–55 (noted)Uncommon125,910–153,890
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon130,950–160,050
Lantadyme seedLantadyme seed14–16Uncommon10,164–11,616
Dwarf weed seedDwarf weed seed14–16Uncommon11,508–13,152
Magic seedMagic seed4Uncommon209,856
Palm tree seedPalm tree seed10Rare396,000
FlaxFlax450–550 (noted)Common43,200–52,800
Molten glassMolten glass45–55 (noted)Common27,585–33,715
Soft claySoft clay450–550 (noted)Uncommon188,550–230,450
Yew logsYew logs68–82 (noted)Uncommon11,356–13,694
Yew logsYew logs675–825 (noted)Rare112,725–137,775
Teak plankTeak plank45–55 (noted)Uncommon16,740–20,460
Mahogany plankMahogany plank270–330 (noted)Rare356,670–435,930
Blurberry SpecialBlurberry Special1Uncommon12,008
Vecna skullVecna skull1Very rare*124,871
Hazelmere's signet ringHazelmere's signet ring1Very rare*1,432,268,388
Brawling gloves (Melee)Brawling gloves (Melee)1Very rareNot sold
Brawling gloves (Magic)Brawling gloves (Magic)1Very rareNot sold
Brawling gloves (Ranged)Brawling gloves (Ranged)1Very rareNot sold
Brawling gloves (Agility)Brawling gloves (Agility)1Very rareNot sold
Brawling gloves (Cooking)Brawling gloves (Cooking)1Very rareNot sold
Brawling gloves (FM)Brawling gloves (FM)1Very rareNot sold
Brawling gloves (Fishing)Brawling gloves (Fishing)1Very rareNot sold
Brawling gloves (Hunter)Brawling gloves (Hunter)1Very rareNot sold
Brawling gloves (Mining)Brawling gloves (Mining)1Very rareNot sold
Brawling gloves (Prayer)Brawling gloves (Prayer)1Very rareNot sold
Brawling gloves (Smithing)Brawling gloves (Smithing)1Very rareNot sold
Brawling gloves (Thieving)Brawling gloves (Thieving)1Very rareNot sold
Brawling gloves (WC)Brawling gloves (WC)1Very rareNot sold
Crystal triskelion fragment 1Crystal triskelion fragment 11Very rareNot sold
Crystal triskelion fragment 2Crystal triskelion fragment 21Very rareNot sold
Crystal triskelion fragment 3Crystal triskelion fragment 31Very rareNot sold

Universal drops[]

Universal drops are dropped by nearly every monster outside of Daemonheim.
These drops are dropped alongside main drops.
Item Quantity Rarity GE price
Key tokenKey token1RareNot sold
Mimic kill tokenMimic kill token1Very rare5,575
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