We had to refuel at 85 degrees north (the max range of the plane...the point of no return).  We had set out several drums of fuel the day before...and we had some extra fuel drums in the cabin too =)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/78042080@N00">Erik Charlton</a> from Menlo Park, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/78042080@N00/219514096/">Flying to North Pole</a>