Prehistory
The Hebrides were originally settled in the Mesolithic era and have a diversity of important prehistoric sites. Eilean Dòmhnuill in Loch Olabhat on North Uist was constructed circa 3200-2800 BC and may be Scotland's earliest crannog (a type of artificial island). The Callanish Stones dating from about 2900 BC are the finest example of a stone circle in Scotland, the 13 primary monoliths of between one and five metres high creating a circumference about 13 metres (43 ft) in diameter. Cladh Hallan on South Uist, the only site in the UK where prehistoric mummies have been found and the impressive ruins of Dun Carloway broch on Lewis both date from the Iron Age.
Read more about this topic: Outer Hebrides