I haven't read the book, but based on the review at
<
http://www.kk.org/cooltools/archives/001749.php>, "World Party: The
Rough Guide to the World's Best Festivals" would be a good source for
people looking for local color to add to a Glorantha game.
--
David Dunham
Glorantha/HQ/RQ page: www.pensee.com/dunham/glorantha.html