Christopher James Adler is an American musician, best known as the founder and longtime drummer of heavy metal band Lamb of God from 1994–2019, and Grammy Award winning member of Megadeth.

Dark Roots of Earth is the eleventh studio album by American thrash metal band Testament. It was released on July 27, 2012, in Europe, and four days later in North America by independent German record label Nuclear Blast Records. The album is available in three configurations, CD, CD/DVD and vinyl, with the latter two versions including four bonus tracks. The album was produced by Andy Sneap, who mixed and engineered the band's previous three studio releases, The Gathering (1999), First Strike Still Deadly (2001), and The Formation of Damnation (2008). The album artwork was created by Eliran Kantor. A music video was made for the track "Native Blood". Dark Roots of Earth entered the Billboard 200 at number 12, Testament's highest position ever.