Dunno about Western maps, but old ‘military’ maps of Russia are now frequently used by hikers, climbers and such folk to plan outdoors routes. There are tons of

Dunno about Western maps, but old ‘military’ maps of Russia are now frequently used by hikers, climbers and such folk to plan outdoors routes. There are tons of details on the maps, and I guess nature doesn't change that much in the 60 years or so (until now, at least). (Maybe something digital is more in use now, compared to ten years ago—but I sorta doubt it, since neither satellite maps nor vector maps tend to mark useful features in the outbacks. Maybe OSM comes close, since hikers themselves put in the routes and markings there. There's also https://opentopomap.org https://opentopomap.org — dunno how good it is.)