A public bus travels between trees covered by ash from Mount Sinabung volcano at Tiga Pancur village on January 6.
Fourteen people, including four pupils on a school trip, have been killed after a series of huge eruptions thundered from a volcano in Indonesia, officials have said.
Mount Sinabung, which has been rumbling for months, sent hot rocks and scorching ash up to 2,000m (16,000ft) into the air.
The four high-school students and their teacher were killed on the excursion to see the volcano up close, said Sutopo Purwo Nugroho, the spokesman for the National Disaster Management Agency.
A local television journalist was also among the dead. Officials fear there could be more fatalities.
"We suspect there are more victims but we cannot recover them because the victims are in the path of the hot (ash) clouds," said Mr Nugroho.
More than 30,000 people have taken refuge since Sinabung, on the island of Sumatra, started erupting in September.
Sinabung spews ash in November last yearBut some villagers had returned home on Friday after authorities advised that houses outside of a 5km (3.1 mile) radius of Sinabung were safe.
Saturday's eruptions sent lava and pyroclastic flows up to 4.5 km from the volcano.
All those who had been allowed to return home on Friday were ordered back into evacuation centres following the eruptions.
Sinabung had been quiet for around 400 years until it rumbled back to life in 2010, and again in September last year.