At least 404 terrestrial volcanoes have erupted since 1883 — the year of Krakatoa's historic eruption. Nearly 200 of these eruptions have occurred since the year 2000. These eruptions have varied in size and effects. Some are downright cataclysmic, like the 1980 eruption of Mount St. Helens in Washington, while other eruptions are much smaller, frequent and localized. Kilauea, the shield volcano now causing destructive lava flows in Hawaii, has erupted 95 times since 1883.

How to read this chart: Each volcano with a confirmed eruption during or after 1883 is represented on the chart by a shape. The size of the shape and its order on the chart correspond to the volcano's elevation above sea level. The color corresponds to how many eruptions have been observed since 1883 — cooler colors mean fewer eruptions, while the hotter colors indicate more frequent eruptions.

The shape itself corresponds to the type of volcano: