Hienghène (French pronunciation: [jɛ̃ɡɛn] or [jəŋ.ɡɛːn];[3][4] Fwâi: Hyehen)[5] is a commune in the North Province of New Caledonia, an overseas territory of France in the Pacific Ocean.

[6] The islets are remnants of a limestone and silica formation that once covered the whole of the bay, some 40 million years ago.

[6] Erosion from wind and water carved away the softer limestone, leaving the harder silica behind in eye-catching formations.

Several of these formations have been given fanciful names, such as the Sphinx, the Towers of Notre Dame, and the Hen (pictured).

This New Caledonian location article is a stub.