11. This method of fortification, known as a crannog , was common in the Late Middle Ages. 12. It excavated a small henge and a crannog ( artificial-island home ) in Loch Migdale. 13. Tree ring dating of oak planks from the crannog indicate that it was built between 889 and 893. 14. The crannog is oval-shaped and consists of a stone and earth mound with a flattened top. 15. His stronghold was based at the crannog at Inishrush, which is also known as the Green Lough. 16. In the centre of the loch are the remains of a crannog known as Dutton's cairn. 17. One such crannog is Dun Anlaimh, which is thought to date to at least the later Middle Ages. 18. The Archaeological study of the crannog in Loch Gabhair suggests that the seat of the kings of Lagore was there. 19. Near the north shore on the islet of " Eilean Fraoch " is the remains of a crannog . 20. Crannogs are normally associated with Scotland and Ireland, and the Llangorse crannog is the first to be discovered in Wales.
