Cahercommaun (), sometimes Cahercommane is a triple stone ringfort on the south-east edge of the Burren area, in Kilnaboy, near the rural village of Carran, in County Clare, Ireland. It was built in the 9th century.
Cahercommaun (), sometimes Cahercommane is a triple stone ringfort on the south-east edge of the Burren area, in Kilnaboy, near the rural village of Carran, in County Clare, Ireland. It was built in the 9th century.
==Features== thumb|left|Inner and outer wall of Cahercommaun ringfort Cahercommaun sits on the edge of an inland cliff facing north overlooking a wooded valley, with three concentric walls reaching to the cliff edge. The inner wall alone used 16,500 tons of stone. The outer wall measures some 350 ft east-west by 245 ft north-south. The inner wall is about 5 ft thick and 4 ft high and rises 12 to 14 feet above the cliff. The innermost wall, which is the thickest, forms an almost complete circle, but the two outer walls (connected with each other by subsidiary walls, like a fan) only form a semicircle. The innermost wall contains three chambers within the wall.
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