Headhunters, cannibals, and jungle guarded the location of Sumatra\'s Lake Toba until 1852 when it was finally seen by a European explorer and drawn on the map. with steep Caldera wall.
It left the hole now partially filled by a Lake sixty miles long and eighteen miles wide.
When the super-volcano Toba erupted some 74,000 years ago it was with an explosion equivalent to 2,800 times that of the 1980 Mount St Helens eruption in USA.
A surprise, for Lake Toba is the biggest Caldera Lake in the world.
Headhunters, cannibals, and jungle guarded the location of Sumatra\'s Lake Toba until 1852 when it was finally seen by a European explorer and drawn on the map