Southern Atmosphere (Natural Colors; credits: Lunar Explorer Italia)

Caption NASA:"A Cassini Spacecraft image captures a bright, oblong storm swirling high through the Middle Latitudes of the Southern Hemisphere.
The image was taken through a spectral filter centered on wavelengths of light that are strongly absorbed by Methane gas. Hence, any light making it through this filter to the camera's detector has bounced off clouds that are high in the Atmosphere, making them visible, while light passing through the cloud-free surroundings gets absorbed by the Methane gas there before it reaches the lower clouds.

The image was taken with the Cassini Spacecraft wide-angle camera on Jan. 5, 2009 using a spectral filter sensitive to wavelengths of near-InfraRed Light centered at 890 nanometers. The view was acquired at a distance of approx. 711.000 Km (such as about 442.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or Phase, Angle of 106°.
Image scale is roughly 39 Km (about 24 miles) per pixel".