System Of A Down and Deftones have just announced a very special show indeed.

The two all-time outfits will not only be co-headlining the gig at the legendary Golden Gate Park in San Francisco, but will be joined by The Mars Volta, Viagra Boys and VOWWS.

The event will take place on August 17, with tickets on-sale from 10am (PT) this Friday, April 12 – fans can sign up to the pre-sale via the System Of A Down and Deftones site’s.

Announcing the event on their socials with a shiny graphic, a note reads:

“For the first-time ever… a stand-alone once in a lifetime event… at the historic Golden Gate Park.”

This weekend, Deftones are set to play Coachella, ahead of two shows in Spain next month.

System Of A Down, meanwhile, are gearing up to headline Las Vegas’ Sick New World at the end of the month, alongside Slipknot as fellow headliners.