Last December, 12 people were swept away to Lake Toba or buried under tons of mud after heavy rains triggered flash flood and landslide in mountainside villages in North Sumatra province.

Last December, 12 people were swept away to Lake Toba or buried under tons of mud after heavy rains triggered flash flood and landslide in mountainside villages in North Sumatra province. Only one of ...

the provincial capital of Indonesia’s North Sumatra, on winding roads that take you past some of the island’s greatest sights, including the majestic Lake Toba. But the real test comes when ...