Officials warned people to steer clear of coastal areas in several beach towns along Indonesia’s Sunda Strait as the death toll from last weekend’s tsunami reached at least 429.
More bodies are expected to be found as rescue crews get to more outlying areas along the coast.
"There are six villages that we haven’t been able to enter yet because the roads, bridges are badly damaged,” said Indonesia’s disaster mitigation agency spokesman, Sutopo Purwo Nugroho.
The Anak Krakatau volcano is still highly active and could remain so for a lengthy time.
There are fears extreme weather could trigger another collapse of the volcano.
"We keep monitoring the tremor activities particularly under (current) extreme weather and high tides. Such conditions can potentially cause the collapse of the volcano’s flank," Indonesia’s meteorological agency chief Dwikorita Karnawati said.
"The buildup of hot magma and compressed gas beneath Anak Krakatau must be strong enough to be forcing its way to the surface. There is no way to predict how long this will continue," said volcanologist Jess Phoenix.
"It is capable of violent eruptions, largely due to the interaction of water with intense heat, which causes the water to flash to steam, and rock to fragment, explosively," Phoenix added.
Almost 1, 500 people were injured and more than 150 are still reported missing.
So far 79 hotels and resorts have been reported destroyed or severely damaged, as well as nearly 900 homes.
Nugroho said the Java-Sumatra ferry service, one of Indonesia’s busiest shipping lanes, is still operating and hasn’t been impacted.
A large portion of one of Anak Krakatoa’s slopes collapsed into the sea causing 10 feet high waves.
There was no earthquake so a tsunami warning was not triggered.
The waves reached land 24 minutes later.
More than 4,200 have died in natural disasters this year in Indonesia even before the Anak Krakatoa eruption.
This includes two high fatality powerful earthquakes in Lombok and Sulawesi earlier this year.
