Volcanoes of the Galapagos
This image, taken by the new Landsat 8 satellite, shows 3 volcanoes in the Galapagos Islands: La Cumbre, Darwin, and Alcedo, from left to right.
Note how you can make out details of both the volcanic processes and the climate in this image. The volcanic craters stand out obviously, and on each volcano you can see a series of streaks that head outward from the summit. Some of these streaks turn, some are straighter, some in the area between Darwin and Alcedo first head into the saddle between the two volcanoes and then turn towards the coast. These streaks are the remnants of eruptions.