A team of engineers has begun constructing one of the most difficult “roads” ever attempted: a 1,600-kilometre (1,000 miles) overland route to the South Pole.

It is hoped that the snow highway will some day become a regular surface route from McMurdo Station on the Antarctic coast to the Amundsen-Scott base, freeing up ski-equipped supply planes for other missions.

Over the next two years, the engineers will slowly mark out the trail. If successful, it will show tractors can be a reliable and efficient way of getting fuel and food to the South Pole.