Hienghène (,; )http://www.tourismeprovincenord.nc/fr/les-communes/hienghene is a commune in the North Province of

New Caledonia New Caledonia ( ; ) is a group of islands in the southwest Pacific Ocean, southwest of Vanuatu and east of Australia. Located from Metropolitan France, it forms a Overseas France#Sui generis collectivity, ''sui generis'' collectivity of t ...

, an overseas territory of

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

in the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

. It is located on a bay called Hienghène Bay, known for its eroded limestone islets. The islets are remnants of a

limestone Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ...

and

silica Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , commonly found in nature as quartz. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and abundant f ...

formation that once covered the whole of the bay, some 40 million years ago. 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).

References

Communes of New Caledonia {{NewCaledonia-geo-stub