Volcanism is one of nature’s primal spectacles. It commands our attention, whether for its awesome power, its danger, or its beauty. The years 1975-85 brought dramatic examples of volcanism – from the 1980 blasts of Mt. St. Helens, through the continuing lava river of Hawaii, to the tragic eruption of Colombia’s Nevado del Ruiz in 1985 and these have been abundantly documented by the news…