The Philippine Island of Luzon contains a freshwater lake called Taal Lake, which contains its own island named Volcano Island. This island also contains its own crater lake which also has its own Island named Vulcan Point. No shit.
Taal Volcano is a complex volcano located on the island of Luzon in the Philippines. Historical eruptions are concentrated on Volcano Island, an island near the middle of Lake Taal. The lake partially fills Taal Caldera.