Printing large Maps

[guyanonymous]

I've a friend who created this: http://www.blythecreative.com/portfolio1/illustrations/

Ideally she'd print it at 100" x 60" or larger (not including a border) to get all the detail out of it. What sort of options does she have for that large size? What type of cost might she expect?


I'll pass on gamer-printshop's link as well.

edit: I think it actually belongs as high-quality wallpaper at 2x that size to not need a magnifying glass to fully appreciate. And it is vector, so quality should scale....