Where is the largest active volcano in the world?

Mauna Loa (Hawaii) is the world's largest active volcano, projecting 13,677 feet above sea level, its top being over 30,000 feet above the deep ocean floor. From it's base below sea level to it's summit, Mauna Loa is taller than Mount Everest.

 

Learn More:

 

Volcanoes: 1998, USGS General Interest Publication, 45 p.

Volcanoes of the United States: 1994, USGS General Interest Publication, 44 p.