Grimstone

Grimstone
Released		19 November 2025 (Update)
Members		Yes
Location		North of Weiss
League region		N/A
Requirements		87 [not boostable]
Music		Stranded
Map
Advanced data
Type		Island

Grimstone is an island north of Weiss. It is a long-forgotten frozen island beyond the Fremenniks' border, requiring 87 Sailing to moor on. As Grimstone is in icy seas, an eternal brazier is required to access it.

The island surface contains several rocks of coal, nickel, adamantite and runite along with a Wallasalki colony that resides on the southern half of the island. There is also a lockbox which contains the Dragon keel schematic. Additionally, there is a cave leading to the Grimstone Dungeon, which is the main attraction of the island. The dungeon contains chilled jellies, frost dragons as well as a furnace that can smelt cannonballs at twice the normal speed.

• Teleport to fairy ring DLP inside the dungeon (requires that you have moored on the island at least once)
• Sail with your ship and dock at the island
• Teleport to your boat (If it's situated at Grimstone) (Requires completion of Pandemonium, 67 Magic, and a Greater Teleport Focus on the boat)

• Grimstone first appeared during the June 2025 Sailing Beta, but was not accessible.

v t e Ocean locations
Bodies of water	Ardent Ocean Catherby Bay Brimhaven Passage Rimmington Strait Strait of Khazard Gu'tanoth Bay Feldip Gulf Oo'glog Channel Mythic Sea The Simian Sea Kharazi Strait Arrow Passage Menaphite Sea The Storm Tempor Kharidian Sea Lumbridge Basin Mudskipper Sound Bay of Sarim Musa Passage Lum Lagoon Unquiet Ocean The Lonely Sea Anglerfish's Light Red Reef Turtle Belt Bay of Elidinis Tortugan Sea Sea of Shells Pearl Bank Eastern Ocean Haunted Coast Dragon's Maw Gravewater Bay Hallowed Sea Slepe Sound Eastern Ridge Murkshore Sea Sanctuary's End Uzer Channel Mos Le'Water Strait of Discord Scabaras' Shallows Tainted Tides Shrieking Waters Forbidden Depths The Accursed Sea The Iron Sea Shrouded Ocean The Skullhorde Rainbow Reef Southern Expanse Barracuda Belt Sea of Souls Breakbone Strait Backwater Zul-Egil Soul Bay Sapphire Sea The Everdeep Western Gate Fortis Bay Aureum Coast Wyrm's Waters Western Ocean Crystal Sea Litus Lucis Porth Neigwl Tirannwn Bight Pilgrims' Passage Crabclaw Bay Great Sound Porth Gwenith Hosidian Sea Vagabonds Rest Piscatoris Sea Moonshadow Gulf of Kourend Northern Ocean Everwinter Sea Winter's Edge Lunar Sea Lunar Bay Fremennik Strait Kannski Tides V's Belt Grandroot Bay Fremensund Idestia Strait Stoneheart Sea Weissmere Shiverwake Expanse Weiss Melt Untamed Ocean The Searing Sea Fiend's Passage The Cinderwaters Ancient Reef The Eastern Doldrums Wyvern's Wake Bleakwater Bay The Precipice Echoing Rift Forgotten Ocean Last Gasp Grieving Bight Kebos Shore Dagger's Edge Sulphur Cove The Endless Sea Lovkengj's Shroud Frostgrave Depths Sunset Ocean Sunset Bay Misty Sea Ochre Sea Calidum Reach Dusk's Maw Aehecatl Aestuarium Tempestus Horizon's End
Landforms	Ardent Ocean The Pandemonium Rock Island Prison Unquiet Ocean Charred Island Charred Dungeon Red Rock Last Light The Onyx Crest Dognose Island The Great Conch The Summer Shore Shellbane Gryphon Cave Gryphon Caves Coral Nurseries The Little Pearl Remote Island Wyrmscraig Wyrmscraig Cavern Eastern Ocean Cursed Archipelago Roger's Recluse Shrouded Ocean Anglers' Retreat Isle of Bones Tear of the Soul Minotaurs' Rest Here be minotaurs Rainbow's End Sunbleak Island Sunbleak Cave Wintumber Island The Crown Jewel Vatrachos Island Isle of Serpents Deepfin Point Deepfin Mine Limbo Western Ocean Lledrith Island Port Roberts Chinchompa Island Ynysdail Ynysdail Cavern Drumstick Isle Buccaneers' Haven Buccaneers' Laboratory Northern Ocean Brittle Isle The Graveyard Grimstone Grimstone Dungeon Untamed Ocean Future content Forgotten Ocean Future content Sunset Ocean Shimmering Atoll Laguna Aurorae Kurask Lair