Restless Prometheus...

Caption NASA:"Prometheus draws a fresh streamer of material from the F-Ring as it passes the Ring's interior edge. The streamer will continuously shear out as it orbits the planet, becoming more elongated and increasingly aligned with the F-Ring with time.
A single large crater is the principle feature visible on Prometheus (102 Km, or about 63 miles across) in this view. The moon is lit partly by bright Sunlight and partly by reflected light from Saturn.

This view looks toward the unlit side of the rings from about 57° above the Ring-Plane.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 11, 2007 at a distance of approx. 1,7 MKM (about 1,1 MMs) from Prometheus and at a Sun-Prometheus-spacecraft, or phase, angle of 130°.
Image scale is roughly 10 Km (about 6 miles) per pixel".