The vast archipelago, which sits on the Pacific "Ring of Fire", has suffered its worst annual death toll from disasters in more than a decade.

Earthquakes flattened parts of the island of Lombok in July and August, and a double quake-and-tsunami killed more than 2,000 people on a remote part of Sulawesi island in September.

Saturday's tsunami destroyed more than 700 buildings, from small shops and houses to villas and hotels. It took just 24 minutes after the landslide for waves to hit land, and there was no early warning for those living on the coast.