Featuring Armin van Buuren, Sasha, Hernan Cattaneo, and more, the 12th annual Monster Massive returns after a record breaking attendance of over 65,000 last year with an expanded venue, new areas of music and all the costumed madness, debauchery and energy that Monster Massive has become world renowned for. Due to overwhelming response, we will be combining the Los Angeles Sports Arena/Grounds & Exposition Park and for the first time in a decade to make the largest dance music massive in N. America.