The Sunken Crannogs of Loch Tay

Loch Tay hides eighteen Iron Age crannogs beneath its surface — artificial timber islands where people lived over 2,500 years ago, still being excavated by divers today.

Loch Tay, in Perthshire, holds one of the densest concentrations of crannogs found anywhere in Scotland. Eighteen have been identified beneath its surface: artificial islands built from timber, stone, and brushwood, raised in the shallows and connected to shore by a narrow causeway or walkway that could be defended or withdrawn. People lived on and around Loch Tay's crannogs from the Bronze Age through the Iron Age, and some sites show evidence of occupation stretching over centuries. Underwater archaeological survey and diving began in earnest in 1980, and the work has recovered tools, pottery, jewellery, quernstones, and even the remains of dugout log boats from the loch bed — a level of preservation unusual for structures this old, owed to the cold, low-oxygen water that slows decay. In 1997, based directly on excavation results from the Oakbank crannog site, a full-scale reconstruction was built on the loch as the centrepiece of the Scottish Crannog Centre. The reconstruction burned down in a fire in 2021 and has since been rebuilt at a new location on the loch, larger than before — a working demonstration of Iron Age life that continues to draw on the archaeology being pulled, piece by piece, from the water itself.

Folklore Disclaimer: These accounts are drawn from local tradition, oral history, and community memory. They are not presented as factual claims.

Location accuracy: Approximate. Coordinates indicate the general area.