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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.
  • 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 bones1Always165

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 10000Coins2,351–12,456Common2,351–12,456
Teak logsTeak logs7–13 (noted)Common595–1,105
Mahogany logsMahogany logs3–7 (noted)Uncommon1,023–2,387
Monkey bonesMonkey bones(noted)Common468
Raw swordfishRaw swordfish4–12 (noted)Common1,108–3,324
Big bonesBig bones22–28 (noted)Common3,630–4,620
Weapon poison+ (3)Weapon poison+ (3)1Common1,490
Grimy ranarrGrimy ranarr(noted)Uncommon6,576
Grimy dwarf weedGrimy dwarf weed(noted)Rare20,670
Grimy lantadymeGrimy lantadyme(noted)Rare20,254
Poison ivy berriesPoison ivy berries(noted)Uncommon3,270
Ruby ringRuby ring4–6 (noted)Uncommon8,468–12,702
Ruby necklaceRuby necklace3–5 (noted)Uncommon6,546–10,910
CoconutCoconut(noted)Uncommon7,352
Rare drop tableRare drop table1RareNot sold
Black mask (10)Black mask (10)1Very rare1,537,821

Tertiary drops

Item Quantity Rarity GE price
Scare TacticsScare Tactics1Rare536,535
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 sapphire1Common420
Uncut emeraldUncut emerald1Common820
Uncut rubyUncut ruby1Common1,297
Uncut diamondUncut diamond1Common2,792
Uncut diamondUncut diamond45–55 (noted)Rare125,640–153,560
Loop half of a keyLoop half of a key1Common11,753
Tooth half of a keyTooth half of a key1Common15,227
Uncut dragonstoneUncut dragonstone1Uncommon12,655
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare569,475–696,025
Dragon longswordDragon longsword1Common57,934
Dragon spearDragon spear1Rare34,731
BattlestaffBattlestaff180–220 (noted)Rare658,080–804,320
Rune javelinRune javelin5Rare900
Rune platebodyRune platebody1Uncommon37,480
Rune platebodyRune platebody15–25 (noted)Rare562,200–937,000
Shield left halfShield left half1Rare64,894
Dragon helmDragon helm1Uncommon58,964
Rune arrowheads 5Rune arrowheads113–137Common14,464–17,536
Onyx bolts 5Onyx bolts135–165Very rare1,065,690–1,302,510
Chaos talismanChaos talisman1Rare1,405
Nature talismanNature talisman1Rare1,190
Water talismanWater talisman65–82 (noted)Rare246,090–310,452
Earth talismanEarth talisman65–82 (noted)Rare11,635–14,678
Fire talismanFire talisman25–35 (noted)Rare7,875–11,025
Raw lobsterRaw lobster135–165 (noted)Common59,805–73,095
Raw sharkRaw shark225–275 (noted)Uncommon201,600–246,400
Big bonesBig bones68–82 (noted)Uncommon11,220–13,530
Dragon bonesDragon bones180–220 (noted)Rare336,240–410,960
CoalCoal200–1,100 (noted)Uncommon23,800–130,900
Gold oreGold ore90–110 (noted)Common32,490–39,710
Adamantite oreAdamantite ore180–220 (noted)Uncommon44,640–54,560
Adamant barAdamant bar14–16 (noted)Common19,530–22,320
Adamant barAdamant bar135–165 (noted)Rare188,325–230,175
Runite oreRunite ore90–110 (noted)Rare94,050–114,950
Rune barRune bar(noted)Common6,504
Rune barRune bar45–55 (noted)Rare97,560–119,240
Grimy torstolGrimy torstol90–110 (noted)Uncommon672,570–822,030
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon169,830–207,570
Super restore (4)Super restore (4)45–55 (noted)Uncommon180,180–220,220
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon172,755–211,145
Lantadyme seed 5Lantadyme seed14–16Uncommon14,826–16,944
Dwarf weed seed 5Dwarf weed seed14–16Uncommon12,222–13,968
Magic seed 5Magic seed4Uncommon203,512
Palm tree seed 5Palm tree seed10Rare499,440
FlaxFlax450–550 (noted)Common40,950–50,050
Molten glassMolten glass45–55 (noted)Common12,060–14,740
Soft claySoft clay450–550 (noted)Uncommon266,850–326,150
Yew logsYew logs68–82 (noted)Uncommon12,308–14,842
Yew logsYew logs675–825 (noted)Rare122,175–149,325
Teak plankTeak plank45–55 (noted)Uncommon15,525–18,975
Mahogany plankMahogany plank270–330 (noted)Rare234,900–287,100
Blurberry SpecialBlurberry Special1Uncommon16,746
Vecna skullVecna skull1Very rare*74,132
Hazelmere's signet ringHazelmere's signet ring1Very rare*1,590,640,621
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 rare9,031
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