Wikipedia
Nengonengo
Nengonengo is a small atoll of the Tuamotu Archipelago in French Polynesia. It is located 53 km southeast of Ravahere, its closest neighbor, and 100 km southwest of Hao Atoll.
Nengonengo Atoll is roughly bell-shaped. It measures 13 km in length with a maximum width of 8 km. It has a wide lagoon with a surface 67 km², but there is no pass to enter it.
Nengonengo used to be inhabited, but no longer is.