Hi Jon. I've replied to your email. As I said there, I think you've misunderstood the concept of the Geomorph range, and so there's no single large map to make, but instead it's a set of 5 10x10 tiles that you can arrange as you see fit. Each page of the pdf prints one half of a 10x10 tile, with a slight overlap for alignment assistance. And for additional help, you can see full previews of each tile in the product description here, to help you piece together the sheets.
A fun, semi-detailed city. A small City State of the Invincible Overlord without some of the goofy Judge's Guild 1970ness (and I was a player and loyal customer!).
This is one that I printed and will use.