The largest volcano in the world, Mauna Loa in Hawaii which is estimated at around 80,000 cubic kilometers. Peter Lipman of the U.S. Geological Survey used high resolution bathymetry of the underwater slopes of the volcano, data from seismic profiling and gravity studies, and the subsidence rate of Mauna Loa to define the shape and density of the buried part of the volcano. The enormous volcano covers half of the Island of Hawai`i and by itself amounts to about 85 percent of all the other Hawaiian Islands combined!!
Want to see what it looks like from the summit right now??