1926 Eruption

Mauna Loa's recognized eruptive pattern is a summit eruption followed—within hours, days, or months—by a flank eruption. In 1926, there was a brief summit eruption, followed by 14 days of eruption on the Southwest Rift Zone.

Mauna Loa is the largest active volcano on Earth. Mauna Loa is in the shield-building stage of Hawaiian volcanism, a period when the volcanoes grow most rapidly, adding as much as 95 percent of their ultimate volume.