Assembling Hawai‘i Island's volcanoes: Does size really matter?

Colors ranging from red to purple indicate the water depth around the Island of Hawai‘i, while shades of gray show land topography above sea level. Red shows lava flows erupted over the past 200 years. The Puna Ridge represents the submarine extension of Kīlauea's east rift zone. The Hilo Ridge, originally thought to be a rift zone of Mauna Kea, may, in fact, be connected to Kohala.