Mauna Loa, or 'Long Mountain' in Hawaiian, is located on the island of Hawaii. Mauna Loa's most recent eruption occurred from March 24 to April 15, 1984. Because its lava is extremely fluid (it has low viscosity), and its slopes are not steep, Mauna Loa is shaped like a shield.Eruptions are rarely violent, and the most common form is in the Hawaiian style, which involves lava fountains feeding lava flows.

Mauna Loa is the world's largest shield volcano. Mauna Loa is not known to have produced an explosive eruption since 1843, but there is geologic evidence for some explosive activity in the past 1,000 to 300 years.

Background: Mauna Loa, world's largest mountain and volcano, is a archetype of a basaltic shield volcano in its late mature stage of life, and only about 600,000-1,000,000 years old.

It rises 13,680 ft. (4,170 m) above sea level. No recent eruptions of the volcano have caused fatalities, but eruptions in 1926 and 1950 destroyed villages, and the city of Hilo is partly built on lava flows from the late 19th century. Since 1832, Mauna Loa has erupted 39 times; it's last eruption was in 1984. Geologists have identified at least 4 debris fans comprised of fragmented rock deposits on top of pāhoehoe lava flows that spread from the summit. Most volcanoes are on the edge of tectonic plates. From the time of its first documented eruption in 1843, Mauna Loa has erupted 33 times. Magma pressure in the volcano remained high following an eruption from the summit of Mauna Loa in 1949 eruption.

Mauna Loa, the world’s largest volcano, located on the south-central part of the island of Hawaii, Hawaii state, U.S., and a part of Hawaii Volcanoes National Park.One of the largest single mountain masses in the world, Mauna Loa (meaning “Long Mountain” in Hawaiian) rises to 13,677 feet (4,169 metres) above sea level and constitutes half of the island’s area. Mauna Loa is the world's largest volcano, and is also one of the most active.

Recent Lava Flows. The eruption started at the summit (in Moku'aweoweo crater, which is the grey oblong area in the lower-left corner of the image to the left), extended in to the upper Southwest Rift Zone, and then migrated to the Northeast Rift Zone on the first day of the eruption. Over the past week, HVO recorded 47 small-magnitude earthquakes on the Mauna Loa's summit and upper-elevation flanks. Mauna Loa is a REALLY tall and big… Volcano - Volcano - Mauna Loa, Hawaii, 1984: On average, Mauna Loa, located on the island of Hawaii in the Pacific Ocean, erupts every three and a half years with fountains and streams of incandescent lava. This is a list of volcanic eruptions from Mauna Loa, an active shield volcano in the Hawaiian … Mauna Loa is the world's largest and one of its most active volcanoes - a giant shield volcano on the Big Island of Hawai'i. It is a shield volcano, one of five that make up the U.S. Island of Hawaii located in the Pacific Ocean. Mauna Loa erupted most recently in 1984. Following a year of increased seismicity, Mauna Loa began erupting at 1:25 am on March 25, 1984. "The rate of the eruption is just really fast."

The Hawaiian Islands are in the middle of a tectonic plate, but the plate has a hole.

HILO, BIG ISLAND (HawaiiNewsNow) - When Mauna Loa is erupting it's impossible to ignore. Mauna Loa has erupted 33 times since 1843.

It is believed that Mauna Loa has been erupting for 700,000 years or more, emerging from under the sea approximately 400,000 years ago.

Notable earthquake swarms occurred during three intervals from May 27 to June 14, July 30 to August 7, and December 1 to 15, 1949, but none ended in an eruption.