Metal iconoclasts Prong are returning to their roots this fall with a new album, Carved Into Stone. The band emerged in the NYC underground in the late ‘80s, and has since perfected their formula of in-your-face riffs brimming with a calculated aggression, rocking both the local and international scenes and indelibly influencing the sound of many future metal acts. Prong will be performing as part of the Rocks Off Concert Cruise, which departs from Pier 40 at West Houston Street on Oct. 19.