If you draw campaign region maps in Tiled and drop the result into your VTT, this set draws the same map twice: once as an old parchment chart in sepia ink, once in natural colour. Every tile has a twin in the other palette at the same position, so you draw the chart once and swap the sheet to show your players the coloured version.

It has coastlines, rivers and roads, 35 landmarks per palette, a compass rose, a border and a blank title cartouche.

700 tiles at 16x16, with two finished sample maps.

$9.99, or $6.99 while the Verdant bundle sale runs to 17 October.
https://csaf.itch.io/verdant-40-atlas

AI disclosure: the tiles come from procedural generator code that is AI written. No diffusion model is used.