Many readers know that Hawaii Island is made of five volcanoes — Kilauea, Mauna Loa, Hualalai, Mauna Kea and Kohala. Those same readers know that such obvious features as the cones that dot Mauna Kea, the Halai Hills and Kulani Cone on Mauna Loa, and Kapoho Cone, Puu Oo and Mauna Ulu on Kilauea are places where eruptions took place. If that’s the case, then why aren’t they called volcanoes? Isn’t a volcano a place where lava reaches the surface of the Earth? Why doesn’t the island have hundreds of volcanoes instead of only five?