A view of Mauna Loa from Mauna Kea. Photo: USGS, public domain.

Geography Facts About the World’s Largest Active Volcano

Caitlin Dempsey

Hawaii's Mauna Loa is the world's largest subaerial volcano as well as the world's largest active volcano.

The eruption within Halema'uma'u, at Kīlauea summit within Hawai'i Volcanoes National Park. Photo: USGS web cam, public domain.

Geography Facts about Kīlauea

Caitlin Dempsey

Kīlauea is the youngest and most southeastern volcano on Hawaii island.

Pahoehoe from Kilauea eruption, 1989.

Pacific Ring of Fire

Julian Marks

The Ring of Fire refers to the long chain of volcanoes and earthquake zones that encircle much of the Pacific Ocean.

Astronaut photograph ISS063-E-104178 of Ol Doinyo Lengai was acquired on October 6, 2020

The Earth’s Only Active Volcano Known to Emit Natrocarbonatites

Caitlin Dempsey

Only one active volcano in the world is known to emit natrocarbonatite.

Katmai Calder, Katmai National Park and Preserve, NPS, public domain.

The United States Ranks Third for Historically Active Volcanoes

Caitlin Dempsey

The United States ranks behind Indonesia and Japan for historically active volcanoes based on written records.

12 Next