Lake Poso

Lake Poso (Danau Poso) is a large tectonic freshwater lake in Poso Regency, Central Sulawesi, Indonesia, located in Pamona Puselemba near Tentena town. Covering about 323 square kilometers, it is Indonesia's third-largest lake and one of its deepest at over 450 meters. Notable for its exceptionally clear water, sandy beaches, surrounding forested hills, and endemic aquatic fauna, it is a major natural attraction in Central Sulawesi.

Visitors can expect a vast, clear freshwater lake surrounded by forested hills and mountains with sandy and pebble beaches along the shoreline. The water is exceptionally clear with a blue to turquoise hue. Areas like Siuri and other lakeside beaches offer swimming and relaxation spots, small jetties, and boat moorings. The surroundings are rural with villages, clove and cocoa plantations, and views of the Tentena outlet where the Poso River begins. Facilities are basic and the setting is natural and tranquil.

Lake Poso is an ancient tectonic lake formed by tectonic activity, estimated to be several million years old. As one of Sulawesi's ancient lakes, it has long been studied for its geology and endemic biodiversity and has historically been the center of settlement for the Pamona people in the Poso region.

The lake is culturally significant to the Pamona people who inhabit its shores and consider it central to their livelihood, traditions and folklore. Lakeside villages maintain traditional fishing practices and the lake area hosts local cultural events and is regarded as a sacred natural feature in local custom.