Largest lake on an island in a lake
Who
Manitou Lake
What
106 square kilometre(s)
Where
()

The largest lake in a lake is Manitou Lake, with an area of 106 km² (41 miles²) on the world's largest lake island, Manitoulin Island (2,766 km², 1,068 miles²), in the Canadian part of Lake Huron. The lake itself contains a number of islands.