The youngest person to trek to the South Pole is Lewis Clarke (UK, b. 18 November 1997), who was 16 years 61 days when he reached the Geographic South Pole on 18 January 2014, having skied 1,123.61 km (698.18 miles;606.7 nm) from Hercules Inlet on the Ronne Ice Shelf in a two-man unsupported and assisted expedition. The expedition team members, Lewis and his polar guide Carl Alvey of ANI (Adventure Network International) were dropped at Hercules Inlet on 1 December 2013 and started on the following day. The expedition was unsupported, in that only human power was used to move forward, with no wind, animal or motorized vehicle power. The team members received three food and medical re-supplies and were equipped with satellite telephones, providing updates on progress to the ANI base at Union Glacier. On their arrival at the South Pole at 14:30 Union Glacier/Chile time (UTC-3), Lewis and Carl were met by explorer Hannah McKeand – a Guinness World Records title holder – and flown back to Hercules Inlet.