> Lake Matano is the largest lake in Sulawesi and the ninth deepest lake in the world, with a maximum depth of 590 meters (1,940 feet). The lake is located on the island of Sulawesi, which is itself part of the country of Indonesia. Within the lake, there is an island called "Pulo Mahamba" which has a lake within it called "Lake Towuti". And within Lake Towuti, there is another island called "Una Una" which has a crater lake within it. This crater lake is considered to be the largest lake on an island in a lake on an island in a lake on an island.
> Lake Matano is the largest lake in Sulawesi and the ninth deepest lake in the world, with a maximum depth of 590 meters (1,940 feet). The lake is located on the island of Sulawesi, which is itself part of the country of Indonesia. Within the lake, there is an island called "Pulo Mahamba" which has a lake within it called "Lake Towuti". And within Lake Towuti, there is another island called "Una Una" which has a crater lake within it. This crater lake is considered to be the largest lake on an island in a lake on an island in a lake on an island.
Lake Towuti is a bigger lake next to Lake Matano, not within. https://www.google.com/maps/place/Lake+Towuti/@-2.7905548,12...
Pulo Mahamba doesn't seem to be anywhere.
Una Una is an island, but it is definitely not in Lake Matano. https://www.google.com/maps/place/Unauna+Island/@-0.4072052,...