Itacha Chasma on Tethys

Caption NASA originale:"Ithaca Chasma is one of the two most prominent features on Saturn's moon Tethys; the other is the gigantic crater Odysseus. Ithaca Chasma is visible near the moon's lower right limb in this image, which does not reveal the branching canyon's full extent. Discovered in NASA Voyager images, the chasm is about 100 Km across on average, and is 4 Km deep in places. It stretches more than 1.000 Km over Tethys' surface, from North to South. This view was obtained with the Cassini spacecraft narrow angle camera on Jan. 17, 2005, at a distance of approximately 1 MKM (approx. 621.000 miles) from Tethys and at a phase angle of 110°. Resolution in the original image was about 6 Km (3,7 miles) per pixel. Contrast was enhanced and the image was magnified by a factor of two to aid visibility".