Mount Dukono erupts on Halmahera island, trapping hikers who went to the area despite it being closed since April 17. Indonesian authorities are searching for 20 missing hikers after the eruption of Mount Dukono on Halmahera island killed three people. Mount Dukono, an active volcano, erupted at 07:41am local time on Friday (22:41 GMT on Thursday), spouting a tower of volcanic ash as high as 10km (6.21 miles) into the sky, and was accompanied by a “weak to strong booming sound”, Indonesia’s Center for Volcanology and Geological Hazard Mitigation said in a statement.…