Great Cavern Sea Zone Info and Map
Zone Map
Interactive map from MnM Atlas by ocombe, an unofficial fan atlas built on community maps. Use the full-screen button to explore.
Other Great Cavern Sea Maps 1 map
From the community wiki · Open full size
The Great Cavern Sea is a vast underground lake in The Deep, dotted with islands and ringed by caves. The easiest way in is to ride the boat that runs between the Underdocks and Ail’Vorith and jump off mid-crossing, or to take a wizard port straight there. You can also follow the boat’s route on foot along the shore and swim the rest of the way.
Each island has its own crowd: Blacktide orcs work the cove (levels 11–17), goblin divers and stone-sorters hold the bone-covered island (19–24), wasps and beetles nest on their own island (22–26), basilisks sun themselves on Basilisk Island (27–28), and spiders lurk in the caves (29–30). Elementals near the wizard spire and a level 60 Deep Elf wizard are far beyond everything else here.
Reading This Map
The map above marks this zone’s major camping spots along with the levels recommended for grinding there — but it isn’t the full picture. Plenty of other mobs wander loose between those marked areas, and some zones hold hidden pockets that aren’t shown on the map at all, or aren’t clearly marked.
What You’ll Find
- Monsters: Orcs, Goblins, Basilisks, Wasps, Beetles, Spiders, Elementals, Deep Elves
- Level range: 11–30 (a few much higher named mobs)
- Connects to: Caves of Irem, Ail’Vorith, Rothold, Blind Midden
EXP Spots
The Great Cavern Sea filled out during the October 2026 Early Access updates. Levels, spawns and loot come from community reports and may change — let us know if you have any information that needs to be added or corrected.
Quests
- Survey the Creatures of the Cavern Sea — from Sereth Vael’xirith. Reward: Shore Surveyor’s Charm
- Survey the Myconid Colony — from Quilla Dorn. Reward: Researcher’s Draught, Shed Myconid Fiber
- Island Ruin Stones — from Isrothen Vael’xirith
- Repair the Mooring Post. Reward: Waxed Cloth Backpack
- Goblin Island Records — from Halveth Velgarrith. Reward: Velgarrith Diver’s Draught
- Blacktide Orders — from Drelith Vael’xirith. Reward: Scout’s Mending Draught
- Great Cavern Sea Spider Caves — from Mae’vith Ith’vayen. Reward: Ith’vayen Dressed Silk
NPCs Found Here
Boss Gurrok · Morgak Foamscar · Overseer Vashruk · Skerrick · Dhurazzim · Vhaleth Hal’kareth · Foreman Vikkit · Tibbek · Sereth Vael’xirith · Isrothen Vael’xirith · Halveth Velgarrith · Naevith Or’daal · Mae’vith Ith’vayen