Tirawa impact basin on Rhea

Caption NASA originale:"The large Tirawa impact basin on Saturn's moon Rhea is visible at the two o'clock position in this Cassini image. This view shows principally the trailing hemisphere on Rhea and is centered on the moon's equator. North is up and tilted 25° to the left.
The image was taken with the Cassini spacecraft narrow-angle camera on March 13, 2005, through a filter sensitive to wavelengths of ultraviolet light centered at 338 nnmts.
The image was obtained at a distance of approximately 1,7 MKM(such as 1,1 MMs) from Rhea and at a phase angle of 90°. Resolution in the original image was 10 Km (approx. 6 miles) per pixel. The image has been contrast-enhanced and magnified by a factor of two to aid visibility".