Tangkoko Batuangus Nature Reserve - 4 Things to Know Before Visiting

Mount Tongkoko or Mount Tangkoko is a stratovolcano in the north of Sulawesi, Indonesia. Its summit has an elongated deep crater. On the east flank there is a flat lava dome Batu Angus. Historical records only show eruptions in the nineteenth century. The Tangkoko Nature Reserve is a refuge for such species as the Celebes crested macaque and spectral tarsier.

Lembeh Strait is a strait in Indonesia, separating the islands of Sulawesi and Lembeh. The town of Bitung and Tongkoko volcano are located on the western side of the strait. The strait is known for its abundant and colorful marine life, in particular sea slugs, and is a popular diving spot.

Lembeh is an island off the north east coast of Sulawesi near the town of Bitung. Lembeh Island is 25km long and 2km wide. Lembeh Island is separated from the mainland of Sulawesi by a narrow stretch of water known as the Lembeh Strait. The Lembeh Strait is world-known for its extremely high density of rare and unusual marine life, in particular frogfish, rare species of octopus, seahorses and nudibranchs.

Bangka is an island lying east of Sumatra, administratively part of Sumatra, Indonesia, with a population of about 1 million. It is the 9th largest island in Indonesia and the main part of Bangka-Belitung Province, being one of its namesakes alongside the smaller Belitung across the Gaspar Strait. The provincial capital, Pangkal Pinang, lies on the island. The island is administratively divided into 4 regencies and a chartered city.

Manado is the capital city of the Indonesian province of North Sulawesi. It is the second largest city in Sulawesi after Makassar, with the 2015 estimated population of 425,420 distributed over a land area of 157 km². The Manado metropolitan area has a population of 1.2 million as of 2018. The city is located at the Bay of Manado and is surrounded by a mountainous area.

Mount Mahawu is a stratovolcano located immediately east from Lokon-Empung volcano in North Sulawesi, Indonesia. The volcano is capped with 180 m wide and 140 m deep crater with two pyroclastic cones in the northern flanks. A small explosive eruption was recorded in 1789. In 1994, fumaroles, mud pots, and small geysers activities were observed along the greenish shore of a crater lake.