 The territory is made up of three main volcanic tropical islands along with a number of tiny islets, and is split into two island groups that lie about apart, namely Wallis Islands (or Uvea Islands) in the northeast and Hoorn Islands (or Futuna Islands) in the southwest, including Futuna Island proper and the mostly uninhabited Alofi Island.The capital of Wallis and Futuna is Mata-Utu, which is located on Wallis Island.ICAO location identifiers are linked to each airport's Aeronautical Information Publication (AIP), which are available online in Portable Document Format (PDF) from the French "Service d'information aéronautique" (SIA).