how big is the hualalai volcano
summit elevation 2521 m. Shield volcano. Hualalai is the westermost shield volcano on the island of Hawaii. Eruptions of Hualalai Volcano in 1800-01 occurred from 5 vents with two lava flows reaching the sea. Hualalai began growing on the west flank of Mauna Kea about 800,000 years ago, and rose above sea level 300,000 years ago. The northwest rift zone of Hualala continues for a distance of 40 km, to a depth of 3000 m. Hualalai Volcano from the summit of Mauna Kea volcano-John Seach.