 Scott was impressed with Gran, who was an expert skier, and Nansen convinced Scott to take Gran as ski instructor to Scott's men for the Terra Nova Expedition.Arriving in Antarctica in early January 1911, Gran was one of the 13 expedition members involved in the laying of the supply depots needed for the attempt to reach the South Pole later that year.From November 1911 to February 1912, while Scott and the rest of the Southern party were on their journey to the Pole, Gran accompanied the geological expedition to the western mountains led by Griffith Taylor.