Geofrrey McKinney, of Carcosa fame, pointed an intriguing question about the classic Keep of the Borderlands: the scale on the map and the wilderness movement rate in the text makes crossing the few hundreds yards from the Keep to the Caves incredibly slow. Most DMs fixed that issue by chosing one or the other.
For this map, I assumed the text was correct, and the standard movement rate of a party is 60', ie. the fighter-in-plate rate. So, one square is roughly equal to half a mile.
Using the genious Hexographer, I drafted this hexmap version with a scale of 1 hex = 2 squares, so one hex equal one mile. To figure the height lines, I made changes in the vegetation. I didn't put any scale on the map, so it can be used at wider scales if needed - and that's what I plan to do.