Geology of the Pacific Ocean Guinea, and New Zealand lie outside the andesite line. Outside of the andesite line, volcanism is explosive; the Pacific Ring of Fire is the world's foremost belt of explosive volcanism. The Ring of Fire is named after the several hundred active volcanoes that sit above the various subduction zones. In 2009, the deepest undersea eruption ever recorded occurred at the West Mata submarine volcano, a mile beneath the ocean, close to the Tonga-Kermadec Trench, within the Ring of Fire; it was filmed by the US Jason robotic submersible which descended over . The Pacific Ocean is the only ocean which
Ring of Fire II to share in creating the main threads and plot lines of the milieu so that this work and the large second full novel in the series, "1633", were written contemporaneously. Flint is on record that large portions of "1633" were adjusted drastically, even thrown out and rewritten as later submissions in the collected stories in Ring of Fire impacted the various and diverse story threads. For a fuller precis on this interesting and historic literary development see Assiti Shards series. Flint's e-book preface refers to this work as being a prequel to his own short novel (below), but the title