Kings Canyon is a remarkable formation.  APT's very capable driver Garry ensured that we had rest breaks and gave a very informed commentary on the terrain and the history of the region.  The helicopter tour of the rim was fantastic.  Thanks Richard.  Great pilot by the way.  Next morning we began the 6 kilometre walk that required a degree of fitness took us through to the Lost City and the Garden of Eden.  If you haven't been to Kings Canyon then ensure that you do.  The seclusion is undescribable.  An incredible history behind its beginnings.