Gunung Dukono, Active volcano in North Halmahera Regency, Indonesia.

Gunung Dukono is an active volcano in North Halmahera that rises to roughly 1,335 meters elevation. Its structure displays multiple summit peaks and numerous overlapping craters that form a complex volcanic system.

A major eruption in 1550 produced lava flows that connected Halmahera island to a cone on Mount Mamuya's north slope. This event permanently altered the region's landscape.

Dukono's name is used locally for the whole volcanic complex in northern Halmahera, and its ash falls on villages and farmland around the cone. The 1550 lava flow that filled the strait between Halmahera and the north flank cone of Mount Mamuya is still part of the landscape people describe. Guides and villagers around the mountain were unaware of the climbing ban imposed after 17 April 2026, and some visitors entered to make social media content.

Scientists track the volcano continuously using satellites and ground instruments to monitor its ongoing activity. Visitors should check current conditions and safety guidelines before planning a visit.

The volcano has remained continuously active since 1933, regularly ejecting ash plumes that rise several kilometers into the sky. This persistent activity over nearly nine decades makes it one of the world's longest continuously erupting volcanoes.