The Melvins and Municipal Waste are among the acts booking their tickets to Memphis in June to take part in the 2013 Scion Rock Fest. Though the full lineup has yet to be revealed, the Scion AV blog has unveiled a wealth of the bands taking part in this year's event.

The blog has revealed the event's poster (below), with the still-to-be-announced acts being marked out. The Melvins and Municipal Waste are second and third billed on the poster, which means there's a major headliner yet to be announced.

The event will be an all-day bash that's free to concertgoers and takes place on June 1 in Memphis. In addition to the Melvins and Municipal Waste, the event features A Life Once Lost, Six Feet Under, Arsis, Impaled, the Casualties, Vision of Disorder, Code Orange Kids, Pallbearer, Subrosa, Ice Dragon, the Shrine, Indian Handcrafts, Anciients and Noisem.

The full lineup and ticketing details are expected to be unveiled next week.