Samosir, Volcanic island in Lake Toba, North Sumatra, Indonesia.
Samosir spans 630 square kilometers within Lake Toba, featuring two smaller lakes, Sidihoni and Aek Natonang, amid mountainous terrain reaching 1077 meters elevation.
The formation of Samosir resulted from the massive Toba supervolcano eruption 75,000 years ago, which created both the lake and the island.
The island maintains its position as the primary center of Batak civilization, with numerous traditional houses displaying characteristic architectural elements across multiple districts.
Visitors access the island through regular ferry services from Parapat to Tuktuk, where most accommodations and tourism facilities concentrate.
The Tano Ponggol Canal, constructed in 1906, separated Samosir from mainland Sumatra, transforming it from a peninsula into the largest island within an island.
Location: North Sumatra
Capital city: Pangururan
Elevation above the sea: 1,077 m
Shares border with: Dairi, Pakpak Bharat, Humbang Hasundutan
Website: https://samosirkab.go.id
GPS coordinates: 2.64025,98.71525
Latest update: May 27, 2025 08:44
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