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Dolmen — Brenanstown

Portal tomb

Why this matters

Portal dolmen; Late Neolithic period. Its massive granite roofstone and chamber construction reflect significant communal effort and advanced megalithic building techniques of the time.

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What is recorded here

This very impressive portal tomb is located on the valley floor of a steep-sided glen close to a stream. A massive wedge-shaped granite roofstone (L 5.1m; Wth 4.5m; D 1.75m) covers a chamber (int. dims. L 3.1m; Wth 1.42m) and antechamber facing west. It rests on the two front portal stones (H 2.6m and 2m respectively) and three sidestones. A doorstone separates the main chamber from the antechamber. There are some granite boulders at the rear of the tomb wall which may have been part of an additional chamber (Borlase 1897, 2, 390-92; Ó Nualláin 1983, 96; Turner 1983, 5). There are two deep depressions on the upper surface of the roofstone, with groves leading to the corner of the stone. It has been suggested that this be an original drainage feature. The monument was taken by Guardianship into State Care (Nat Mon 291) Compiled by: Geraldine Stout and Margaret Keane Uploaded on: January 15 2017
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