English: Tractus Catena floor. Location is 20.9 North and 256.1 East. Scale bar is 500 meters long. Image was taken by the Mars Reconnaissance Orbiter's HiRISE. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. Image courtesy NASA/JPL/University of Arizona.
{{Information |Description = Tractus Catena Floor, as seen by hirise. Location is 20.9 North and 256.1 East. Scale bar is 500 meters long. |Source = http://hirise.lpl.arizona.edu/PSP_010595_2010 |Date = May 22, 2009 |Author