Lake Matano
Lake Matano is the deepest lake in Indonesia and one of the deepest in Southeast Asia, known for unique endemic species and increasing environmental pressure from nearby nickel mining operations.
Home to transparent fish and other unique species found nowhere else on Earth, this ancient tectonic lake on a remote Indonesian island faces a mounting environmental threat from the very mining industry that depends on its watershed.
A Tectonic Lake in a Graben
Lake Matano formed within a graben, a depression created by tectonic faulting, making it geologically similar in origin to several of the world's other deepest rift lakes.
Indonesia's Deepest Lake
At 590 meters, Lake Matano is both the deepest lake in Indonesia and the world's deepest lake located on an island.
Unique Endemic Species
The lake hosts unique endemic species found nowhere else, including several transparent fish species that have adapted to its distinctive isolated ecosystem.
Threatened by Nickel Mining
Lake Matano faces significant environmental pressure from nearby nickel mining operations, which have increased sediment and contamination levels threatening the lake's fragile deep-water ecosystem.
