Tomorrow, the largest congregation of metal fans this side of North America will descend upon the Empire Polo Field in Indio to watch Metallica, Slayer, Megadeth and Anthrax play ear-bleeding guitar riffs for seven freakin hours.
Will there be a riot? We don't know. Will they tear up the field and start throwing around the grass? We don't know. Will they start eating the grass? No one knows for sure. One thing we do know is what they'll look like–here's our handy dandy guide to spotting the average Big 4 fan.