Here's Isthmus, copy-pasted from 1:100k maps available at www.karjalankartat.fi to this master file, a snippet below.
Just doing the square bit, which would be more than enough I'd wage, that's 120 * 110 kilometers, or 480 x 440 hexes. But with encouragement and tips from Jason, I will do them one smaller area at time.
The grid visible is a 2km x 2km grid, so each square is 8*8 = 64 hexes.
