Primus was back at the Eureka Municipal Auditorium on Thursday night, Sept. 17, with a Willy Wonka-themed show that took the packed-in audience on a sugar-fueled trip into trippiness. The Primus and the Chocolate Factory tour with the Fungi Ensemble brought movie clips, swirling lights, top hats and enormous Oompa Loompas to the stage as the band cranked out candy-coated rock. Photographer Mark McKenna was in the midst of the madness. Enjoy the slideshow and see what you missed — or just to make sure what you saw was real.