Three of Titan's major surface features - dunes, craters and the enigmatic Xanadu area - appear in this radar image from the Cassini spacecraft.

The hazy, bright area at the left that extends to the lower center of the image marks the northwest edge of Xanadu, a continent-sized feature centered near the moon's equator. At upper right is the crater Ksa, first seen by Cassini in 2006. The dark lines running between these two features are linear dunes, similar to sand dunes on Earth in Egypt and Namibia.

The image was taken by Cassini's Titan Radar Mapper on June 21, 2011.
The Cassini-Huygens mission is a co-operative project of NASA, ESA and Italian Space Agency.

For more information, see: http://saturn.jpl.nasa.gov/photos/imagedetails/index.cfm?imageId=4338 .