Gulf of Morbihan

The Gulf of Morbihan is a natural harbour on the coast of the Département of Morbihan in the south of Brittany, France. This English name is taken from the French version: le golfe du Morbihan. It is more accurately called 'the Morbihan' directly from its Breton name which is Ar Mor Bihan, meaning 'the little sea' (Compare the Welsh y môr bychan), as opposed to the Atlantic Ocean outside, (Ar Mor Bras). Legend says that there are as many islands in the Gulf as there are days of the year. However, this is untrue and the gulf has about 40, depending on the tide. Many islands are private property, except the largest two, l'Île-aux-Moines and l'Île-d'Arz.

"Golfe du Morbihan" redirects here. For the similarly named gulf in the Kerguelen Islands, see Golfe du Morbihan (Kerguelen).
Gulf of Morbihan
Gulf of Morbihan
LocationBay of Biscay
Coordinates
Ocean/sea sourcesAtlantic Ocean
Basin countriesFrance
Max. length20 km (12 mi)
Max. width15 km (9.3 mi)
Surface area115 km2 (44 sq mi)
Average depth23 km (14 mi)
Map
Port of Île aux Moines
Pink house near Vannes

The area around the gulf features an extraordinary range of megalithic monuments. There are passage dolmens, stepped pyramids with underground dolmen chambers, stone circles, and giant menhirs, among others. The site best known to outsiders is Carnac, where remains of a dozen rows of huge standing stones run for over ten kilometers. The passage grave of Gavrinis, on a small island in the Gulf, is one of the most important such sites in Europe. Some of the ruins have been dated to at least 3300 BC — 200 years older than England's Stonehenge.

Geography

Tides and currents

The gulf is sheltered from the Atlantic Ocean by the peninsula of Rhuys, but a 1 km long gap between Port-Navalo (in the commune of Arzon) and Kerpenhir (commune of Locmariaquer) lets the water in and out. Because this gap is narrow, the tidal currents are strong and water speeds can reach up to 9.4 knots.

Festivals

Every alternate year a yachting festival is held, it is known as 'La Semaine du Golfe Du Morbihan' celebrating the Brittany's culture, music and boating and marine traditions. In 2017, 1,450 boats entered the regatta in addition to the hundreds of spectator craft. The highlight of the festival is a 'Big Parade of Sail' in which all the boats are displayed en route from Port Navalo to Vannes.

Communes located along the gulf


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