education or employment purposes". Of the total population, 6,953 people reside in the "Stornoway settlement Laxdale (Lacasdal), Sandwick (Sanndabhaig) and Newmarket" with the balance distributed over 280 townships. In addition to the major North Ford () and South Ford causeways that connect North Uist to Benbecula via the northern of the Grimsays, and another causeway from Benbecula to South Uist, several other islands are linked by smaller causeways or bridges. Great Bernera and Scalpay have bridge connections to Lewis and Harris respectively, with causeways linking Baleshare and Berneray to North Uist; Eriskay to South Uist; , and the southern Grimsay to Benbecula; and Vatersay to Barra. This means that all the inhabited islands are now connected to at least one other island by a land transport route. Uninhabited islands There are more than fifty uninhabited islands greater in size than in the Outer Hebrides, including the Barra Isles, Flannan Isles, Monach Islands, the Shiant Islands and the islands of . In common with the other main island chains of Scotland, many of the more remote islands were abandoned during the 19th and 20th centuries, in some cases after continuous habitation since the prehistoric period. More than 35 such islands have been identified in the Outer Hebrides alone. On Barra Head, for example, Historic Scotland have identified eighty-three archaeological sites on the island, the majority being of a pre-medieval date. In the 18th century, the population was over fifty, but the last native islanders had left by 1931. The island became completely uninhabited by 1980 with the automation of the lighthouse. Some of the smaller islands continue to contribute to modern culture. The "Mingulay Boat Song", although evocative of island life, was written after the abandonment of the island in 1938 and Taransay hosted the BBC television series Castaway 2000. Others have played a part in Scottish history. On 4 May 1746, the "Young Pretender" Charles Edward Stuart hid on with some of his men for four days whilst Royal Navy vessels patrolled the Minch. Smaller isles and skerries and other island groups pepper the North Atlantic surrounding the main islands. Some are not geologically part of the Outer Hebrides, but are administratively and in most cases culturally, part of . to the west of Lewis lies St Kilda, now uninhabited except for a small military base. A similar distance to the north of Lewis are North Rona and , two