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A map showing the results of the 1883 eruption of the Krakatoa volcano. Black numbers indicate sea depth before the eruption; red numbers are after.

Two geological maps and four sectional drawings showing the Krakatoa volcano before and after its 1883 eruption.

Nine maps of the effects of the 1883 Krakatoa volcanic eruption, including on Rakata Island itself, and Calmeyer Island (formed by the eruption). Other maps use brown shading to show the flooding of nearby islands and settlements by ensuing tsunamis.

A map of the effects of the 1883 Krakatoa volcanic eruption. The orange line is the islands’ outline pre-eruption; the red line is the boundary of the collapsed area. Red numbers are sea depth. Pre- and post-eruption sizes of the islands are listed.