Caltrop

From holidaysforquince.com:

Since the days of Black Sabbath, the promise of heavy rock music has been this: that a perfect series of riffs, reinforced by a tightly-wound rhythmic unit, can deliver very real psychedelic effects, forcibly altering one's conscious state of being. Though post-modern doomsters have toyed with elements of the formula (witness: Earth, Melvins, Isis, etc), the principle importance of the mono-riff has remained intact. World Class, the debut full-length from North Carolina's Caltrop, is wildly -- even transcendently successful because the band's exhilarating performances are rooted in the awareness that their music has an uncanny, historically potent power. Indeed, Caltrop's impeccable arrangements deliberately suggest a sort of ascendant scaffolding, the very foundation necessary for the audacious work of spiritual transformation.