Mount Colo


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 above the sea level. It contains a wide caldera with a small volcanic cone inside. Only three eruptions have been recorded in the history with two of them causing damage.

1898 eruption

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

The island was evacuated, and there was damage to property.

1983 eruption

This eruption was more violent and had a VEI of 4. It involved:
The island was evacuated, and there was damage to property, but no lives were lost.