Landforms of Sumatra

strait between the Malay Peninsula and the Indonesian island of Sumatra

shallow sea between Java and Borneo, in Indonesia

strait between the Indonesian islands of Java and Sumatra

strait between Borneo and Sumatra

national park in Indonesia

strait between Bangka and Sumatra islands, Indonesia

strait in Indonesia

thumb|right|270px|The Sipiso-piso waterfall seen from the eastern rim of the Lake Toba crater, [[Sumatra]]

Helatoba-Tarutung is a group of sulfurous hot springs in the south of Lake Toba, North Sumatra, Indonesia. It stretches 40 km along the Renun-Toru geological fault zone. The last eruption took place during the Pleistocene age.