so this confirms it, just like rockstar did 100 times over. los santos is the only city, and there looks to be 5 or 6 small towns and villages sprinkled around the map. i have to laugh a little at all the "rockstar is definitely lying just like they did about properties" crowd!lol
It's been confirmed that 7 of the big mountains open up and contain San Fierro, Las Venturas, Liberty City, Carcer City, Vice City, Windy City (Chicago), and the GTA San Andreas Grove Street that is the size of all of them put together. The 8th mountain is North Yankton and it is a 1:1 scale of Canada, Greenland, and Norway combined with endless snow fields and delicious realistic caribou steak.