PADANG, Indonesia--Torrential rains have triggered flash floods and a landslide on Indonesia’s Sumatra island, killing at least 19 people and leaving seven others missing, officials said Sunday.

The 1,145-square-kilometer (440-square-mile) Lake Toba, formed out of an ancient super volcano, is a popular sightseeing ...

The Sumatran fault line is the longest in Indonesia, running the length of Sumatra Island from the northwest in Aceh to the south in Lampung, spanning a distance of 1,900km. Eight smaller ...