
1) Atoll of the Cook Islands
Found on
https://www.crosswordclues.com/clue/pukapuka

Pukapuka is a coral atoll in the Cook Islands in the Pacific Ocean, with three small islets threaded on a reef that encloses a beautifully clear lagoon. It is the most remote island of the Cook Islands, situated about 1140 kilometres northwest of Rarotonga. It is a triangular atoll with three islets comprising little more than 3 square kilometres ...
Found on
http://en.wikipedia.org/wiki/Pukapuka
No exact match found.