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

Caption NASA:"Through the Atmosphere of the Southern Hemisphere of Saturn rolls a large storm, seen here as a tight dark circle in the lower left of this image. Horizontal strands of other atmospheric formations give the image the fibrous look of travertine stone.
Prometheus (about 86 Km, or 53 miles across) is a small dark dot in the top left part of the image.

The image was taken with the Cassini spacecraft wide-angle camera on Dec. 30, 2008 using a combination of polarized and spectral filters sensitive to wavelengths of near-InfraRed Light centered at 752 nanometers.
The view was acquired at a distance of approx. 1,2 MKM (about 750.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or Phase, Angle of 27°.
Image scale is roughly 68 Km (approx. 42 miles) per pixel".