The New Wave of British Heavy Metal (NWOBHM) occurred in the late 1970s after the fall of the original British heavy metal bands like Led Zeppelin and Black Sabbath. The progressive sounds of metal were sped up and turned into blistering power chords.
... at Dui on the west coast, and Tertiary conglomerates, sandstones, marls and clays, folded by subsequent upheavals, in many parts of the island. The clays, which contain ...