防御集落(ケルト人) 平城 防御集落(ケルト人) -2世紀 ケルト人が築いた城塞、城郭集落が多数あったことは、『ガリア戦記』の詳細な記述によって明らかなのだが、ローマ人やゲルマン人によって破壊しつくされ、アイルランドのアラン諸島には、ケルト人(ゲール人)の石造の砦であるドゥーンがほとんど完璧に近い保存状態で現存している。 Dun Aonghasa is the most famous of several prehistoric forts on the Aran Islands, of County Galway, Ireland. It is located on Inishmore at the edge of an approximately 100 metre high cliff. A popular tourist attraction, Dun Aonghasa is an important archaeological site that also offers a spectacular view. It is not known when Dun Aonghasa was built, though it is now thought to date from the Iron Age. T. F. O'Rahilly surmised that it was built in the second century B.C. by the Builg following the Laginian conquest of Connacht. It was probably originally constructed as a circular ringfort several hundred metres from the coast, its present precarious position being the result of centuries of coastal erosion.
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