Lake Sidihoni is a small high-altitude lake located on Samosir Island, itself nestled in the heart of the Lake Toba, in northern Sumatra. This unique geographical configuration earned it the local nickname of 'lake within a lake'. With an area of approximately 20 hectares, it offers a rural and peaceful setting, away from Indonesia's classic tourist circuits.

Why visit Lake Sidihoni

The site's appeal rests on several concrete elements:

• A geographical curiosity: a lake inside an island, itself at the center of another lake (Toba, Southeast Asia's largest volcanic lake).
• A preserved rural setting: pastures, buffalo and cattle, hills covered with young pine trees.
• Low visitor numbers: unlike the shores of Lake Toba, Sidihoni remains rarely visited, making it a quiet stop for those exploring Samosir by scooter or on foot.
• A panoramic viewpoint over the heights of Batak Island.

History and local beliefs

Lake Sidihoni has experienced three major documented droughts that have left an imprint on local memory:

• 1943: during the Japanese occupation of the Indonesian archipelago.
• 1958: during the rebellion led by Colonel Simbolon against the central government.
• 2004: the year of the earthquake and tsunami that devastated Aceh province.

For the Batak inhabitants of Samosir, these drainings are not attributed solely to climate variations. Local belief holds that the lake empties when the region experiences a traumatic event. This spiritual reading of the landscape, transmitted orally, is an integral part of the site's identity.

What to see and do here

Around the lake

The lake is small enough to be walked around in less than an hour. The path crosses pastures where water buffalo and cattle graze, herded by Batak villagers. The shores are accessible in places, though swimming is not really practiced here.

The surrounding hills

The heights around the lake are planted with young pine trees and offer clear views over the interior of Samosir Island. A few informal trails allow you to gain some elevation.

Meeting the villagers

The inhabitants of nearby hamlets are unaccustomed to travelers and generally welcome visitors with curiosity. A greeting, a few words in Bahasa Indonesia, and the encounter goes well.

When to visit

The climate on Samosir is tropical highland, with milder temperatures than Indonesia's coastline. Two periods stand out:

• Dry season (May to September): ideal conditions for hiking around the lake and photography. The sky is clearer, trails are passable.
• Rainy season (October to April): frequent showers late in the day, greener landscapes but access sometimes muddy.

The most interesting hours for light remain sunrise and sunset, when the hills take on warm hues. Plan to arrive early if you're staying in Pangururan.

How to reach Lake Sidihoni

The lake is located within Samosir Island, above the town of Pangururan, the main entry point to the west of the island.

• From Pangururan: the simplest solution is renting a scooter (plan half a day for the round trip with stops). Local minibuses and ojeks (motorcycle taxis) also serve villages near the lake, but frequency remains irregular.
• From Tuk Tuk (Samosir's main accommodation area): allow about an hour by scooter across the interior of the island.
• From Parapat (east shore of Lake Toba): ferry to Tomok or Tuk Tuk, then cross the island on two wheels.

Practical information

• Duration of visit: 1 to 2 hours on site, to be integrated into a loop exploring Samosir.
• Access: free, no organized ticket office at present.
• Equipment: closed-toe shoes (wet terrain), water, sun protection, windproof clothing (the altitude cools the air).
• Accommodation: no infrastructure by the lake. Stay in Tuk Tuk or Pangururan.
• Connectivity: mobile network is unreliable in the heights.

Nearby

Once on Samosir, several other points of interest deserve to be combined with Sidihoni in a broader Indonesian itinerary:

• Lake Toba and its Batak villages (Tomok, Ambarita), for history and traditional architecture.
• The Botanical Garden of Bali, if your journey continues southward through the archipelago.
• The Kerta Gosa of Klungkung, another cultural stop in Bali.
• Komodo Island, to extend your adventure eastward through Indonesia.

Frequently asked questions

Planning your trip

Lake Sidihoni fits naturally into a circuit around Lake Toba and Samosir Island, one of the major cultural stops in northern Sumatra. To build a custom itinerary incorporating Sumatra, Java or Bali, explore our Indonesia travel packages.