Mos Le'Harmless
Mos Le'Harmless is a members island in Morytania. Ways to teleport there include Big Book o' Piracy and Fairy ring (4 teleports in all). This page lists 7 monsters and 6 shops there.
IslandMembersMorytania
Updated . Teleports, gates, shops and monster locations from the RuneScape Wiki's Mos Le'Harmless page and tables (CC BY-NC-SA 3.0), checked 2026-10-09. The Ironman notes are ours. Item sprites © Jagex.
Why an Ironman goes
Pirate island with the Cave Horror Slayer dungeon. Cave horrors drop the Black mask.
At a glance
- Type
- Island
- Part of
- Morytania
- Access
- Members
- Monsters
- 7
Getting there
- Big Book o' Piracy
- Fairy ring
- Pirate spell sheet
- Rum (Trouble Brewing)
What you need
No skill or quest gate on record to get in.
Minigames and activities
Monsters (7)
- Rat
- Monkey (Mos Le'Harmless)lvl 5
- Snake (Mos Le'Harmless)lvl 7
- Albino batlvl 43
- Jungle horrorlvl 48
- Cave horrorlvl 77 · 58 Slayer
- Unspeakable horrorlvl 105 · 58 Slayer
Morytania achievements
Mos Le'Harmless counts towards the Morytania area tasks. Track each tier as a goal on your dashboard; it ticks itself off when every task is done.