Unzen

Mount Unzen
Mt. Unzen, showing extensive pyroclastic flow and lahar deposits
Highest point
Elevation	1,500 m (4,900 ft)
Coordinates	32°45′24″N 130°17′40″E / 32.75667°N 130.29444°E / 32.75667; 130.29444Coordinates: 32°45′24″N 130°17′40″E / 32.75667°N 130.29444°E / 32.75667; 130.29444
Geography
Mount Unzen Kyūshū, Japan
Geology
Age of rock	Oldest 500 kyr
Mountain type	Complex stratovolcano
Last eruption	February to May 1996

Mount Unzen (雲仙岳, Unzen-dake^?) is an active volcanic group of several overlapping stratovolcanoes, near the city of Shimabara, Nagasaki Prefecture, on the island of Kyūshū, Japan's southernmost main island.

In 1792, the collapse of one of its several lava domes triggered a megatsunami that killed 14,524 people in Japan's worst-ever volcanic-related disaster. The volcano was most recently active from 1990 to 1995, and a large eruption in 1991 generated a pyroclastic flow that killed 43 people, including three volcanologists.

Currently its highest peaks are Fugen-dake (普賢岳^?) at 1,359 metres (4,459 ft) and Heisei-shinzan (平成新山^?) at 1,486 metres (4,875 ft). The latter emerged during the eruptions of the early, eponymous Heisei era (1989–).