The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
Hualalai, the third of the active shield volcano volcanoes on Hawai'i, is located to the northwest and wet of its giant neighbors Mauna Loa and Mauna Kea. Hualalai volcano last erupted during 1800-1801, when it produced lava flows from 5 fissure vents that reached the sea and buried Hawaiian villages.
Hualalai began erupting about 800,000 years ago and breached the sea surface about 300,000 years ago. The volcano has 3 rift zones, the most prominent is the northwest rift, which is about 40 km long and continues into the sea to a depth of 3000 m.
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