The Largest Lake on an Island in a Lake on an Island

You may know that the largest island in the world is Greenland, and even that the largest lake is the Caspian Sea.

But do you know the largest lake on an island? It's Nettilling Lake on Baffin Island in Canada. Or the largest island in a lake? It's Manitoulin Island in Lake Huron, also in Canada.

And if you're a fan of obscure geographic trivia, you'll really like this one: the largest lake on an island in a lake on an island is Crater Lake on Vulcano Island in Lake Taal on the island of Luzon in the Philippines.
(Source: elbruz.org)