Here is an interesting article about the algorithms used to generate 'fantasy' maps like this one:
This is far beyond the programs I wrote to generate terrain on my Amiga 500, way back in '87. I was content with square grids, no 'erosion', no labels, etc.. But, I did draw them in color, with nice isometric 3D projection!
> Amiga 500
Fish dicks.
wow. i’d forgotten about those :)