Samosir

At 630 square kilometres (243 sq mi), Samosir is the largest island within an island and the fourth largest lake island in the world. It also contains two smaller lakes, Lake Sidihoni and Lake Aek Natonang. Across the lake on the east of the island lies the Uluan Peninsula. The island was historically linked to the mainland of Sumatra on its western part by a narrow isthmus connecting the town of Pangururan on Samosir and Tele on mainland Sumatra, but it was split by the Tano Ponggol Canal and bridge in 1906, which was widened in 2019. Tele consequently offers one of the best views of Lake Toba and Samosir Island. One of the most important objects on the island is a Lutheran church, and opposite it is a huge hill.

Tourism

Samosir is a popular tourist destination due to its exotic history and the vistas it offers, including of the huge hill opposite the Lutheran church. The tourist resorts are concentrated in the Tuktuk area. The island is the centre of the Batak culture and many of the Toba Batak traditional houses (rumah adat) remain on the island. Most of the tourist accommodations are concentrated in the small town of Tuktuk, which is located a one-hour ferry ride across the lake from the town of Parapat.