This image returned by Voyager 2 shows one of the long dark clouds observed in the North Equatorial Belt of Jupiter. A high, white cloud is seen moving over the darker cloud, providing an indication of the structure of the cloud layers. Thin white clouds are also seen within the dark cloud.
At right, blue areas, free of high clouds, are seen. This photo was taken on July 6 from a distance of 3.2 million kilometers.