Mauna Loa (/ ˌmɔːnə ˈloʊ.ə, ˌmaʊnə -/, Hawaiian: [ˈmɐwnə ˈlowə]; lit. 'Long Mountain'[1]) is one of five volcanoes that form the Island of Hawaii in the U.S. state of Hawaii in the Pacific Ocean. Mauna Loa is Earth's largest active volcano [1] by both mass and volume.

Feb 28, 2025 · Mauna Loa, the world’s largest volcano, located on the south-central part of the island of Hawaii, U.S., and a part of the Hawaii Volcanoes National Park. One of the largest single mountains in the world, it rises to 13,677 feet above sea level and …

Nov 30, 2022 · Mauna Loa is the largest active volcano on the planet. Meaning "long mountain" in Hawaiian, it is the quintessential shield volcano in its shape— signified by broad, rounded slopes. The volcano makes up roughly 51% of Hawaiʻi Island and …

Feb 6, 2025 · Mauna Loa is Earth's largest active volcano and covers just over half of the Island of Hawaiʻi. It erupted most recently in November-December 2022, and it will erupt again.

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.

Oct 28, 2024 · Mauna Loa is one of the largest active volcanoes in the world, and hiking its slopes offers a unique opportunity to explore the dramatic volcanic landscape. Standing at 13,681 feet (4,170 m) above sea level, Mauna Loa boasts a commanding presence …

The largest active volcano in the world, Mauna Loa, erupted for about 12 days in late 2022, the first eruption since 1984. The eruption began in Mokuʻāweoweo, the summit caldera of Mauna Loa, around 11:30 p.m. HST on Sunday November 27, 2022.

Nov 18, 2021 · Mauna Loa is considered the world's largest active subaerial volcano that rises to 4,169m and has an estimated volume of 75,000 cubic kilometers. Mauna Loa is surrounded by the Kilauea volcano in the east, the Hualalai volcano in the northwest, and Mauna Kea in …

Apr 21, 2017 · Mauna Loa is a basaltic shield volcano that rises almost 9 km from the ocean floor in Hawaii. Flank eruptions typically occur from NE and SW rift zones, and from the Moku?aweoweo summit caldera. About 1,500 years ago a series of voluminous overflows from a summit lava lake covered about 25% of the volcano’s surface.

Mauna Loa’s elevation and remote location provide a relatively clean, well-mixed sample of the atmosphere, with less contamination from industrial activity and traffic than would be found in the continental U.S. And the harsh volcanic landscape means the observatory is not influenced by emissions from local plant life.