Indonesian rescuers are struggling to rescue survivors from floods and landslides which have killed at least 57 people in Jember, east Java.
Soldiers and residents have had to build temporary bridges to reach the stranded.
Thousands of people have been made homeless by the disaster.
There are particular concerns for the elderly and children.
Officials fear the effects of the flooding were exacerbated by deforestation.
The death toll is likely to rise as rescuers continue to find bodies.