The two Belgium Arctic Arc explorers - Alain Hubert (left) and Dixie Dansercoer (right). Their expedition began on 24 February 2007 in the Russian Arctic and will pass through the North Pole and continue southwards across the ice cap as far as the southernmost tip of Greenland. During their expedition the two explorers will be collecting data in support of ESA's CryoSat-2 mission.