Gili Trawangan is the largest of Lombok’s Gili Islands and the only one to rise significantly (30 m) above sea level. Measuring 3 km long and 2 km wide, it has a population of around 1500. The name Trawangan originates from the Indonesian word Terowongan (Tunnel) due to the presence of a cave tunnel built there during Japanese occupation in World War 2. Of the Gilis, Trawangan is the most developed and geared towards tourist.