Taal

A small, 3-km-wide caldera is located at the center of Volcano Island, in the Philippines' southern Luzon Island. The 5-km-wide Volcano Island lies within a much larger, 15 x 20 km Taal caldera, whose low, western wall is seen across Lake Taal in the distance. The small island in the center of the photo, a remnant of historical eruptions on Volcano Island, is a geographical oddity--an island in a lake on an island in a lake on an island.