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Colo [Una Una]   »  Summary

Colo [Una Una]

Colo [Una Una] Photo

Country:Indonesia
Subregion Name:Sulawesi (Indonesia)
Volcano Number:0606-01=
Volcano Type: Stratovolcano
Volcano Status:Historical
Last Known Eruption: 1983 
Summit Elevation: 507 m 1,663 feet
Latitude: 0.17°S 0°10'0"S
Longitude: 121.608°E 121°36'30"E

Colo volcano forms the isolated small island of Una-Una in the middle of the Gulf of Tomini in northern Sulawesi. The broad, low volcano, whose summit is only 507 m above sea level, contains a 2-km-wide caldera with a small central cone. Only three eruptions have been recorded in historical time, but two of those caused widespread damage over much of the island. The last eruption, in 1983, produced pyroclastic flows that swept over most of the island shortly after all residents had been evacuated.

Global Volcanism ProgramDepartment of Mineral SciencesNational Museum of Natural HistorySmithsonian Institution

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