Gunung Colo (Colo volcano) with elevation 507m asl, located form the isolated small island of Una-Una in the middle of the Gulf of Tomini in central Sulawesi, 45 km from Wakai distric or 75km from Anpana City is a part of Togean Islands.
Only three eruptions have been recorded in historical time.
The last eruption, in July 1983, produced pyroclastic flows and explosive eruption with alot of Produce Vulcanic ash and sand Material also alot of Lapili over most of the island shortly after all residents had been evacuated. and Vulcanic ash until more than 400 km to west at Palu City and Also to east until Luwuk Regency.
when this volcano eruption, Local people said: Also made Small Tsunami about 1 m around Togean Islands
when I visited on June 30.2012 I walking following path of Lava Flow River (Lahar River) take about 2 hours until to The Crater where in 1983 this Eruption
1898 May 03 The eruption had a VEI of 3, qualifying as ‘severe’. It involved Central vent eruption, Crater lake eruption, Explosive eruption, Lahars
1938 – Unknown, The eruption had a VEI of 1, qualifying as ‘severe’. It involved Central vent eruption, Colo Crater with Phreatic Eruption after +/- 10 years after 1898
1983 July 18 This eruption was more violent and had a VEI of 4. It involved: Central vent eruption Explosive eruption ,Pyroclastic flow(s) , Phreatic explosion , Strombolian Eruption, and Tsunami, and evacuation was done, and there was damage to property. Thankfully, nobody was killed
othes photo see here [picasaView album=”ColoVolcano” instantView=”yes”]
some source information from : Global Vulcanism Program – Colo Volcano