Ontong Java Atoll or Luangiua is an atoll in Solomon Islands, and one of the largest atolls on earth. It is inhabited by a Polynesian community of about 2,400 people, who speak the Ontong Java language.
Wikipedia https://en.wikipedia.org/wiki/Ontong_Java_Atoll
Coordinates -5°19'21.008" N 159°23'54.677" E