Slipknot performs at Knotfest at the Shoreline Amphitheatre in Mountain View on July 26, 2019. Photos: Alessio Neri. MOUNTAIN VIEW — Back in 1999 it would seem insane to predict that nine jumpsuit-wearing maniacs from Iowa would tour America with Denmark’s groove metal export, French ultra-heavy environmentalists and Poland’s…

Nergal of Behemoth performs at the Regency Ballroom in San Francisco on Nov. 23, 2018. Photos: Shawn Robbins. SAN FRANCISCO — Polish black and death metal band Behemoth descended upon the Regency Ballroom on Black Friday. The spectacle was a grandiose display of metal theater that was a direct…