Mount Merapi, Indonesia’s most active volcano, has erupted for a third time causing panic as hundreds of people fled the area.
Authorities have raised the alert levels on four of the archipelago’s volcanoes adding to the insecurity of the local population.
Indonesia is struggling with twin disasters as the number of dead from the tsunami has passed the 400 mark with some 300 still missing.
The two catastrophes have displaced around 60,000 people.
Aid workers say the wall of water wiped out at least 10 villages.
Relief efforts have been hampered by a lack of aviation fuel, bad weather and poor communications.
Indonesia sits on the Pacific “Ring of Fire” and is prone to earthquakes and volcanic eruptions.