Îles Saint-Marcouf are a group of two small uninhabited islands off the coast of Normandy, France. They lie in the Baie de la Seine region of the English Channel and are 6.5 km (4.0 mi) east of the coast of the Cotentin peninsula at Ravenoville and 13 km (8 mi) from the island of Tatihou and the harbour at Saint-Vaast-la-Hougue. In addition to the fortifications described below, on the larger island there is a lighthouse that dates to 1948. The larger island, île du Large, is 500 metres (1,600 ft) east of the smaller île de Terre. They have a total area of 1,400 hectares (3,500 acres) and a maximum altitude of 10 metres (33 ft). The islands take their name from Saint Marcouf, a saint born in Bayeux, whom it was said could cure anyone of scrofula. He died on the Îles Saint-Marcouf on 1 May 588 CE. There was a monastic presence on the islands until the 15th century.