A later start was on the cards as a bit of extra grub was needed. We navigated into Ciste M in good challenging conditions to start digging in. Due to a mixture in the snow pack some teams had to improvise the holes. 4 of the group were keen to do some night Nav, so Robbie and myself drew the short straws and went out. Good poor visability nav conditions made the experience worth while. We were back just before midnight.