Colo is a stratovolcano in Indonesia. It forms the small island of Una-Una at the middle of the Gulf of Tomini, the northern part of Sulawesi. The volcano is broad and has a low profile with only 507 metres (1,663 ft) above the sea level. It contains a 2 kilometres (1.2 mi) wide caldera with a small volcanic cone inside. Only three eruptions have been recorded in the history with two of them causing damage.[1]

Colo
A broad ash plume rises above Colo volcano during the 1983 eruption
Highest point
Elevation	507 m (1,663 ft)[1]
Coordinates	0.17°S 121.608°E / -0.17; 121.608
Geography
Colo Location in Sulawesi
Location	Sulawesi, Indonesia
Geology
Mountain type	stratovolcano with caldera
Last eruption	July to December 1983

1898 eruption

The eruption had a VEI of 3, qualifying as 'severe'. It involved:

• Central vent eruption
• Crater lake eruption(?)
• Explosive eruption
• Lahars

The island was evacuated, and there was damage to property.[1]

1983 eruption

This eruption was more violent and had a VEI of 4. It involved:

• Central vent eruption
• Explosive eruption
• Pyroclastic flow(s)
• Phreatic explosion

The island was evacuated, and there was damage to property, but there were no deaths.[1]

See also

• List of volcanoes in Indonesia

References

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