Thrash metal legends Slayer have announced one final world tour in what looks to be the final curtain call for the California quartet. Over 35 years and countless albums amidst lineup changes, controversy, deaths and brutal music that has helped shape the thrash metal genre, the band have posted a video that announce one last tour before calling it a day. They are xpected to announce a North American tour with Lamb Of God, Anthrax, Testament and Behemoth soon. Watch the video below: