'Can Only Pray': Rescue Ops Hampered As Indonesia Volcano Erupts Again

Indonesia Volcano Eruption: Indonesia's national disaster agency said 27 people were still missing.

Indonesia's Mount Semeru spewed more ash on Monday, hampering the search for survivors as aerial images showed the extent of the devastation unleashed by the volcano's deadly weekend eruption.

The biggest mountain on the island of Java thundered to life Saturday, ejecting a mushroom of volcanic ash high into the sky and raining hot mud as thousands of panicked people fled their homes. At least 15 were killed.

Aerial photos showed entire streets filled with grey volcanic ash and mud, which had swallowed many homes and vehicles, including whole trucks.

Indonesia's national disaster agency said 27 people were still missing.