update: The Tattoo the Earth tour has added several new dates and a number of new artists to its summer concert festival roster. Tickets are scheduled to go on sale on Saturday (6/24) for four stops in Texas and a date in Milwaukee.

Slayer [ tickets ], Sepultura [ tickets ], Downset, (hed) p.e. and Puya have been added to a mainstage lineup that will also feature Sevendust, Slipknot and Coal Chamber. A second stage will feature Nashville Pussy, Mudvayne, Hatebreed, Full Devil Jacket, Workhorse Movement and Famous.

Also scheduled to perform are Stone Temple Pilots at the tour’s July 15 stop in Portland, Ore., and Metallica [ tickets ] at the tour's July 20 stop at Giants Stadium in New Jersey.

In addition to the lengthy list of hard-rocking acts, the tour will also feature tattoo artists.