Creating a map was a veery difficult task, so here is a more verbal description to help visualize it
Kranos is a giant mass of land that has formed in almost a circular like shape. All continents in the apocalypse have mostly drowned into the seas, except a large mass made out of North America, and elements of South America that have collided and created giant mountainous regions.
The colony stands on a mountain in between the two, surrounded by forests. Way North of it stands the homebase of the Outlanders, who have created tunnels that they can quickly navigate through.