Not mine, I took the “Map of the Lost Islands” from Dyson’s Dodecahedron, overlaid a hex grid, and colored it in GIMP. Hexes will be 5 miles across for my campaign, but you could make them any size. Green areas are jungles, tan are plains unless they have mountains drawn on them, to correspond with the terrain areas in the Dinosaur Island monster tables from the previous post.
And yes, I realize that this is an archipelago, not an island. I just like the name ‘Dinosaur Island’.