Map showing all locations mentioned on Wikipedia article:
Tepuka is an island 18
kilometers west of Fongafale, in the northwest of Funafuti, the main
atoll of the Oceanian island nation of
Tuvalu. There is a well-preserved underground
bunker on the island. The island lies between the smaller islet of
Vili in the southwest, the smaller islet of Te Afualiku in the northeast, the Pacific Ocean on the west and the Funafuti lagoon called Te Namo on the east. In recent years the
island has suffered from major erosion.