Mauna Loa Volcanic Eruption | #Geology #GeologyPage #maunaloa #Hawaii #volcano Hawaii's Mauna Loa, the world's largest active volcano, has been erupting since November 27, 2022, according to the US Geological Survey. Hawaii's Mauna Loa, has erupted for the first time in almost 40 years. Mauna Loa, located inside Hawaii Volcanoes National Park, covers half of the US state's Big Island. The volcano rises 13,679ft (4,169m) above sea level and spans an area of more than 2,000 sq miles (5,179 sq km).