Ar Mor cycle route - Porspoder / Landunvez / Portsall

DEPARTURE: Car park of the "Ancre An Eor" museum.
Portsall, the port of Ploudalmézeau, was made famous by the Amoco Cadiz disaster. The tanker sank here on March 16, 1978, spilling over 220,000 tonnes of oil into the Iroise Sea and far beyond. A 300 km stretch of coastline was contaminated. L'Ancre An Eor recounts the story of an event that became an incredible human adventure.

This beautiful viaduct, crossed by a narrow road, was built between 1911 and 1913 to allow a railroad line linking Brest to Porspoder to cross this deep valley. In its Portsall-Porspoder section, the "potato train" was in deficit and therefore only served for 22 years. During the Second World War, the Germans put it back into service for their own use. After the war, the rails were removed and a narrow road replaced the track.

The center is characterized by the old houses of wealthy merchant captains built in the 17th and 18th centuries.

The peninsula boasts a soda furnace that was once used to burn seaweed. The "soda bread" resulting from this combustion was then transported to the iodine factories.

It is home to a large fleet of fishermen and yachtsmen. Opposite the port, Yoch Island, a nature reserve, rises to a height of 25 metres. Further out to sea, 2km away, the Four lighthouse stands at the northern entrance to the channel of the same name. It stands 28 metres tall and is equipped with a foghorn.

The chapel is believed to have been built in the 16th century, on the site of the Saint-Gonvel hermitage, which was invoked to cure childhood illnesses. The cross next to the chapel dates from the Middle Ages. Nearby, the Saint-Gonvel dolmen stands on a mound.

This wild coastline, where you can feel the true force of nature, is a living, breathing spectacle to be enjoyed in all weathers.

The first semaphores appeared on the French coast in the early 19th century. They were the successors to the Genoese watchtowers. Electrosemaphores took over in the 1860s. They had two main functions: to communicate with ships and other semaphores using optical signals, and to act as a post office with the advent of the electric telegraph.

Its founder, Saint-Samson, born in Wales, was one of Brittany's most famous bishops. All that remains of the enclosure is the cross and the fountain, the cemetery having disappeared. The water from the fountain is reputed to help young children walk.

Set in a mysterious and legendary site, the ruins of the ancient fortress stand majestically, facing the sea. A 14th-century legacy, it is a "rare testimony to military and seigniorial architecture in Brittany".