World What are the tallest volcanoes on Earth? How many active volcanoes are in the US? What to know November 29, 2022November 30, 2022Camille Fine, USA TODAYComments Off on What are the tallest volcanoes on Earth? How many active volcanoes are in the US? What to know Hawaii's Mauna Loa volcano is shorter than the world's tallest volcanoes by elevation, but it extends thousands of feet below sea level.
