- Two volcanoes are responsible for the creation of the Big island of Hawaii: Mauna Kea and Mauna Loa. Mauna Loa, which means long mountain, is the more remote of the two mountains as Mauna Kea is the location of some of the worlds premiere observatories. Mauna Loa is the worlds most massive volcano, rising some 30, 000 feet from the ocean floor with 13, 677 feet protruding above sea level. I had ...home.maine.rr.com/gwcorp/outdoors/climbing/MaunaLoa/maunaloa.htm