Map design

[lighthousekeeper]

I have designed a map that I enjoy playing, but there is one continent that the computer will never colonize or assign a starting position to. It's the northernmost continent, but not the smallest. It also has a good mix of terrain, Sunny Mesa, and lots of rainy squares. I'd like to start there because it's close to an area where I can exploit the borehole chaining :)
I've moved the Mesa around, added and subtracted area, changed around elevations and coastlines and still nothing. Any ideas?

[bdanv]

what's the size of the map?

[lighthousekeeper]

Whatever the default "Huge" size is.

[bdanv]

try placing some fungus on some of the starting positions the computer is using now.