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.