Volcano Watching started as a series of weekly newspaper columns providing a glimpse into the mysterious inner workings of Hawaiian volcanoes. This popular book reveals the world of a volcano observatory, the work of its dedicated staff, and the techniques they use to monitor volcanic activity. Learn about Hawai‘i’s volcanoes, eruptions at Mount St. Helens, and Colombia’s Novado del Ruiz, as well as volcanoes around the universe. Discover the “volcano watcher” in you with this exciting, revised 2010 edition. This reprint was updated by the Hawai‘i Natural History Association in cooperation with the U.S. National Park Service, U.S. Department of the Interior.