The Azores are volcanic islands, and in many places are still active. In the centre of the island of Faial is a crater, rising 800 metres from the sea, which is called Caldeira on the local maps, although a caldera is basically the name for a volcanic crater that has become filled with water. The false-colour in this colour infrared image increases the off-world feel of any volcanic landscape.
Taken with Infrared Ektachrome film (E-4)