The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
The large Sumbing volcano in Central Java west of Merapi dominates the landscape between Yogyakarta and the Dieng plateau. It is not certain wether the volcano has erupted in historic times, but it is considered one of Indonesia's active volcanoes. The summit of Sumbing contains an 800 m wide crater breached to NE where a geologically young lava dome was built feeding a lava flow down to 2400 m elevation.
Note: another volcano called Sumbing is found on Sumatra.
Dukono volcano photos: Dukono on Halmahera in Indonesia has been in permanent activity for years, often producing ash plumes that drift around the northern part of the island and have become normality.
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