By Lane Oliver
In the four years since Extinction of Humanity, the Austin metal-heads Mammoth Grinder have been carefully crafting their next opus. With a few splits and 7” hinting at what’s to come, the body will still not be fully prepared for Mammoth Grinder’s third full length, Underworlds. Underworlds is a high velocity, bone shattering collection of the band’s most virulent material to date. These are the unholy chants to summon some subterranean beast from its billion year slumber to wreak havoc upon an unsuspecting civilization and your ear holes.