Hey! You'll find them in "isle-of-lore-2-hex-tiles-regular-final\Content\Tiles\Isle of Lore 2\pointy\pointy.overlay_markers.standard" respectively "isle-of-lore-2-hex-tiles-regular-final\Content\Tiles\Isle of Lore 2\flat\flat.overlay_markers.standard". Let me know, if you found them! :)