If you're lucky enough to catch a ride with one of the artists who frequent the graffiti tunnels in Phoenix, you'll want to pack a few extra cans of paint. In the tunnels (often dried-out drainage tunnels), you'll find years of graffiti history by names such as MAC, SUCH, KAPER, SWIFT, and FICE. These are their practice grounds, their history books, and their means of communication with other artists who stop through town looking for a creative outlet. There's no map on the books or list of access points hidden on some online forum. It takes a long-timer to know where these spots are and a smooth talker to be able to get a tour.