Blistering barnacles! Here is a download link for a map set in the Tintin universe. It is for the fictional countries of Syldavia and Borduria, two implacable enemies, as conceived by Herge in the 1930's.
There of course not being any such countries, I took a bit of real estate from elsewhere and applied what I hope to be appropriate looking textures to create somewhat backwards and rural looking countries. There are lots of castles and old fortifications as befits any self-respecting Balkan country.
I used a few names from the Tintin albums for names of the towns and cities, but most are names using Brussels dialect spelled in a sort of Balkan style which I made up by necessity, much like Herge did in his albums. They all mean something, usually comical, but that is of little importance when flying and dogfighting. If you can't make heads nor tails of the names, you can easily edit the file texts.txt with any word editor and turn it into another fictional/non-specific forested looking region. I also included layered .psd files which are easy for editing the map, in this case the ed-m01 maps if you wish to use the map for something else than the fictional Syldavia-Borduria countries. Naturally you don't need them for flying and you can readily delete them should you be hard up for space. But layered files are so easy when editing a map.
There is also a summer and autumn version, just for variety. Both include BumpH files. The 3 bluish stars near the bottom of the map indicate the location of mining facilities. And I'll reiterate my recommendation of flying with hazy weather or worse.
Download Linkhttps://www.mediafire.com/file/bqnr9z1kfd4zoi4/ag_Syldavia.7z/file