Zombie Apocalypse Refuge - - Town Sized

Watching AMC's hit show The Walking Dead last night, I got to pondering, as I often do, about good refuges for survivors to head for that wish to be safe from the zombies. Now I've often thought that an island somewhere would be the perfect solution, with some qualifications: it must be accessible to those who survived the apocalypse; it must be large enough to support agriculture, because even canned, dried and freeze-dried foodstuffs in stores will quickly run out, yet small enough so that survivors can clear it of zombies in short order.

We have such a place in North Carolina: Roanoke Island, the site of Sir Walter Raleigh's "Lost Colony."

Look at this map:



As you can see, Roanoke Island is located between the NC mainland and the Outer Banks. The Banks themselves aren't really suitable for agriculture, although they could support a fishing economy. They are also subject to devastation by hurricanes. Roanoke, within the shallow sounds, is shielded from the worst damage that hurricanes can inflict, that of storm surge. Access to the island is via three bridges that are easily blocked off. Since you have bridges both to the mainland and to the Banks, you have land escape routes in two directions, and boats give you even more options.

Disadvantages to Roanoke Island as a refuge is its proximity to the Norfolk metropolitan area; if I can figure out that the island would make a good refuge, you can bet many others have, too. It's possible that other areas of coastal NC would make good refuges, also.