It might seem misleading to call “New Dawn,” the massive centerpiece of the forthcoming third album from Boston band Morne, beautiful. This is, after all, an 11-minute slog through arching and knotting doom, with riffs that hang cold and still like the blade of a murderous scythe and bottom-of-the-core vocals that suggest the rattle of a broken subwoofer. But this darkness is lined forever with flickering light; sometimes it's courtesy of an extra guitar that pretends it wants to jangle, and sometimes it's in the way the deadly stagger escalates into an almost post-rock surge. Morne’s extended span thrives on implied tension, an unspoken battle between two elements that slowly acquiesces to a curtain of silence. Profound Lore releases Shadows on July 25.