The remains of Dumbuck Crannog on the foreshore of the Clyde near Dumbarton Castle.

Crannogs were man-made islands with a house on them which were connected to the shore by a causeway. The first crannogs appeared Scotland and Ireland around 2,500 years ago, but the Dumbuck Crannog is thought to date from around 2,000 years ago.

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Despite its age, you can still make out the causeway leading up to Dumbuck Crannog (in the foreground) and its circular base (in the distance) made from rocks, earth and wooden posts, some of which are still visible.

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