Treasure | Divinity Original Sin 2 Wiki

Key points of Divinity: Original Sin 2 - Fort Joy map

Yellow Dot (E) = Entrance or Exit
Green Dot = Treasure
Blue Outlined Person (S) = Shops

START – Your journey starts here.
Sebille – Sebille, an elf companion that can join the party.
Beast – Beast, a dwarf companion that can join the party of the player.
Fane – Fane, an undead companion that can join the party of the player.
Red Prince – Red Prince, a lizard companion that can join the party.
Lohse – Loshe, a human companion that can join the player.
Ifan ben-Mezd – Ifan Ben-Mezd, a human companion that can join the party.

E1 A – The entrance to the Underground - it will become visible only during the Withermoore's Soul Jar quest. 
E1 B – The exit from the Underground into Fort Joy.
E2 A – The entrance to the Arena of the One.
E2 B – The exit from the Arena of the One to Fort Joy.
E3 B – Entrance to the Caverns.
E3 B – The exit from the Caverns to Fort Joy.
E4 A – The entrace to the Underground Tunnel. The entrance is hidden and must first be dug out - you need a Shovel or a Lizard character for the task.
E4 B – The exit from the Underground Tunnel to Fort Joy.
E5 A – The entrance to Fort Joy Prison.
E5 B – The exit from Fort Joy Prison to Fort Joy.
E6 A – The entrance to Fort Joy Prison. The entrance is located inside of the building.
E6 B – The exit from Fort Joy Prison to Fort Joy.
E7 A – The entrance to the Ancient Passage.
E7 B – A pathway from Ancient Passage to Fort Joy Prison.
E9 A – A passage to Holding Cells.
E8 A – The entrance to Holding Cells.
E8 B – The exit from Holding Cells to a beach in Fort Joy.
E9 B – The exit from Holding Cells to Fort Joy Prison.
E10 A – The passageway Pipe to the Swamp leading outside Fort Joy Prison.
E10 B – The passageway through Sewage Pipe leading back to Fort Joy Prison.
E11 A – The entrance to Decrepit Ruins.
E11 B – The exit from Decrepit Ruins to Fort Joy.
E12 A – The entrance to Dark Cavern.
E12 B – The exit from Dark Caverns to Fort Joy.
E13 A – The entrance to Hall of Echoes - to get inside, you must interact with a statue.
E13 B – The place you start at in the Hall of Echoes.
E14 A – The entrance to Forgotten Cell.
E14 B – The exit from the Forgotten Cell to the Caverns.
E15 A – The entrance to the Gargoyle's Maze Tower.
E15 B – The exit from the Gargoyle's Maze Tower to Fort Joy.
E16 A – The entrance to Witch's Cave.
E16 B – The exit from the Witch's Cave to Fort Joy.
E17 A – A passage into the next part of Gargoyle's Maze Tower.
E17 B – A passage leading into the main part of Gargoyle's Maze Tower.

S1 – Gawin - sells Aerotheurge Skillbooks. Related with The Teleporter quest. 
S2 – Rezik - a character selling Hydrosophist Skillbooks.
S3 – Butter - sells Huntsman Skillbooks.
S4 – Hilde - sells Scoundrel Skillbooks, weapons and armors.
S5 – Doctor Leste - sells Polymorph Skillbooks.
S6 – Maol - sells Geomancer Skillbooks.
S7 – Margo - a character selling a single Skillbook, Restoration (Hydrosophist).
S8 – Mona - sells Necromancer Skillbooks. Don't cast a Bless spell on her or you will have to fight her.
S9 – Nebora - sells Summoning Skillbooks and crafting materials.
S11 – Kalias - sells Warfare Skillbooks, armors and weapons.
S10 – Stingtail - sells Pyrokinetic Skillbooks.
S12 – Zaleskar - sells high-quality weapons, armors and accessories.
S13 – Bahara - sells Huntsman Skillbooks.
S14 – Samadel - sells Pyrokinetic Skillbooks.
S15 – Simone - sells Hydrosophist Skillbooks
S16 – Exter - sells Scoundrel and Polymorph Skillbooks, weapons, armors and items.
S17 – Gareth - sells Geomancer and Warfare Skillbooks. You need to save him during the "Most Dangerous When Cornered" quest.
S18 – Gratiana - sells Aerotheurge Skillbooks, weapons and items.
S19 – Kerban - sells Summoning and Necromancer Skillbooks and various items.
S20 – Samadel - sells Pyrokinetic Skillbooks during the Call To Arms quest.
S21 – Kerban - sells Summoning and Necromancer Skillbooks. (during the Call to Arms quest)
S22 – Simone - sells Hydrosophist Skillbooks during the Call To Arms quest.
S23 – Gareth - sells Geomancer and Warfare Skillbooks during the Call To Arms quest.
S24 – Exter - sells Scoundrel and Summoning Skillbooks, weapons, armors and items during the Call To Arms quest.
S25 – Gratiana - sells Aerotheurge Skillbooks, weapons and items during the Call To Arms quest.
S26 – Feder - one of the pigs you must save during The Burning Pigs quest. The pig offers rare and powerful items for sale.