There's a lot of diversity among the Valley's concert venues: large-scale clubs, huge stadiums, outdoor amphitheaters, ample dive bars, and even a church rec room. But there are few like The Underground at The Nile Theater, likely the closest thing to a CBGB or Club 82 as Phoenix has ever had. The Nile itself has a history of holding raucous punk and metal shows, and The Underground takes those same madcap events and drops the square footage by a country mile. With exposed pipes and bare concrete floors, The Underground is more akin to a bomb shelter or a fetish dungeon than most rock clubs. But that slightly oppressive, moderately intimidating vibe works wonders, and the best artists are able to fill the space with noise and an air of creative confrontation. It's easy to get lost in the Underground — not, like, physically — forgoing the inherent claustrophobia for primal levels of camaraderie and moshing. Just remember to always stretch and hydrate before any Underground show.