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'Lake Manitou' is the largest lake on Manitoulin Island in Canada. It is the largest lake on the largest freshwater island in the world. Since Manitoulin Island itself is in Lake Huron, Manitou qualifies as the largest "lake in a lake". Lake Manitou has an area of about 104 km² (40 sq. mi.). It is drained by the Manitou River. There are also islands in Lake Manitou, making them islands in a lake on an island in another lake. These islands also have small ponds and lakes.