Multiple choice general knowledge Largest active volcano Mount St Helens, US Mt Cameroon, Cameroon Etna, Sicily Mauna Loa, Hawaii Reveal answer Fill a bubble to check yourself D Correct answer Explanation Mauna Loa in Hawaii is the world's largest active volcano by volume and area, rising over 4 km from the ocean floor to 4,169 m above sea level. It has erupted 33 times since 1843 and is one of the most active volcanoes.