English: Map of April 5-11, 1815 Mount Tambora eruption, on the island

of Sumbawa in Indonesia, with explosion path and fallout around the caldera. The red ring-areas are graduated bands of the thickness of volcanic ashfall. The explosion had 4 times the energy of the later Krakatoa eruption, in 1883.

(Map is re-labeled with 14 & 12-size Arial font. The image is JPEG format, 9x times faster than the large PNG-format version, and is intended for use in frequently-read articles.)

Source: The base map was taken from NASA picture :Image:Indonesia_BMNG.png and the isopach maps were traced from Oppenheimer (2003).

Variation: :Image:1815 tambora explosion.png (12x slower file, small lettering).