Today we spent time on the main wreck site, re-imaging the site at a higher altitude to ensure that there are minimal holes in the final 3D models.  The site has a number of very rugose areas, including large boulders and the base of a cliff.  The vehicle completed its missions sucessfully at the main site before starting a synoptic mission over the secondary wreck site identified in 2012.  This site was very steep, with a vertical profile in excess of over 20m across the site 25m wide survey area.  The vehicle managed this terrain and completed a number of passes over the site before we brought it to the surface for recovery.