Mauna Loa and Mount St. Helens erupt in different ways,” said Liz Westby, a geologist based at the U.S. Geological Survey’s Cascades Volcano Observatory in Vancouver, Washington.

Mauna Loa is taller than Mount Everest Mauna Loa is one of 15 volcanoes located in the eight main Hawaiian islands. It makes up roughly 51% of the island of Hawaii, according to the U.S. National ...

Learn about the largest active volcano on Earth Mauna Loa in Hawaii. Discover its massive size, eruption history, and fascinating facts about its role in shaping the Hawaiian Islands.

Washington's Mount Rainier and Sicily's Mount Etna also made the list. Perhaps most interestingly, Mauna Loa has some competition for the crown of the largest volcano — that is, on the Earth's ...

Hawaii's Mauna Loa, the world's largest active volcano, erupted late Sunday night local time after 38 years of silence.; From its underwater base, the volcano rises 30,000 feet from the bottom of ...

Arsia Mons, the southernmost of the Tharsis Montes trio, stands at an awe-inspiring 20 kilometers high, dwarfing Earth's tallest volcano, Mauna Loa, which rises 9 kilometers above the seafloor.

Mount Adams in Washington state is seismically calm. But a flurry of earthquakes around the volcano has garnered attention from observers wondering whether it will blow.