There is an island in Taal Lake called Volcano Island, which also has a lake with an island. (Photo courtesy of NASA)
Taal Lake is a volcanic crater lake in the Philippines with unique geology, including nested islands and ponds. Scientists believe the crater was created by a series of eruptions between 140,000 and 5,380 BCE, but the landscape has changed significantly since then.
The lake fills the Taal Volcano Caldera, a bowl-shaped basin formed when the volcano's summit broke away during one of its prehistoric eruptions. The water came from the sea, following the Pansipit River from what is now Balayan Bay. The early eruptions also created an island near the center of Taal Lake, called Volcano Island.
Volcano Island is an island in a lake on an island in the sea. However, Volcano Island also contains a lake known as Main Crater Lake, which has its own island called Vulcan Point. This unusual geology, formed by early volcanic activity and subsequent eruptions, is actually “an island in a lake, within an island in a lake, within an island,” according to UNESCO. This description covers Vulcan Point, Main Crater Lake, Volcano Island, Taal Lake, and Luzon, respectively.
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Sourse: www.livescience.com
