Where Mauna Loa’s lava is coming from – and why Hawaii’s volcanoes are different from most
- Written by Gabi Laske, Professor of Geophysics, University of California, San Diego

Hawaii’s Mauna Loa, the world’s largest active volcano, began sending up fountains of glowing rock and spilling lava from fissures as its first eruption in nearly four decades began on Nov. 27, 2022.
Where does that molten rock come from?
We...