This is a route I made for farming [Azshara's Veil] in Vashj'ir -> Shimmering Expanse.
From what i've calculated it is farming 1 herb every 12 sec, that means 4 min each stack.
http://rapidshare.com/files/44121485...ng_Expanse.XML
http://hotfile.com/dl/95295549/7d119...panse.XML.html
The route:
Happy farming!