Images of Sumatra

a large volcanic island in Lake Toba.

Lake Toba is in the north of Sumatra in Indonesia.

The lake and island were formed

after the eruption of a super volcano

some 75 000 years ago

in the last recorded 'supervolcano' explosion.

The island was originally connected to

the surrounding caldera wall

by a small isthmus

which was cut through to aid navigation.

Samosir is the largest island within an island,

and the fourth largest lake island in the world.

Samosir is a popular tourist destination.

The island is the centre of the Batak culture and

many artifacts are to be found on the island.

Ferry boat

on Lake Toba