São Miguel, Azores
This image from over the Azores island of São Miguel features a volcanic complex called the Sete Cidades Massif.
The circular crater or caldera dominates the image and measures about 5 km across. The interior has lakes, volcanic cones, lava domes and maars – or shallow, flooded craters.
The Lagoa das Sete Cidades – or Lagoon of Seven Cities – is comprised of two ecologically different lakes that are connected by a narrow passage, visible at the center of the image. The lake to the north is known as the Blue Lake while to the one to the south is the Green Lake for the colors they reflect.