Named after the "Ocean region"; land from which Princess Daryabar came.
Daryabar Fossa is an east-west trending trough on Saturn's moon Enceladus. Daryabar Fossa was first seen in Voyager 2 images, though a small section was see at much higher resolution by Cassini. It is centered at 9.7° North Latitude, 359.1° West Longitude and is approximately 201 kilometers long. Based on limb profiles of Voyager 2 images, Daryabar Fossa was determined to be a 400-meter deep and 4 kilometers wide (wikipedia entry)
A fossa is a long, narrow, shallow depression. On Enceladus they are named after people and places from Burton's Arabian Nights.
Image Source. Marker locations are approximate and may not always appear to align with image on map.