Look for some vines along the cliff on the west side of the maze, indicated on the map image above. The Gargoyle Maze is located on the southeast side of the island. This guide will explain where to find all of the Crumbling Skulls within the Gargoyle Maze in Divinity: Original Sin 2. Throughout the maze are several Crumbling Skulls that can be redeemed for loot later.
As you explore Fort Joy, you’ll eventually come across a Gargoyle Maze on the southeast end of the island.