Dolmen in Brenanstown, portal tomb in County Dublin

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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

From the National Monuments Service (Archaeological Survey of Ireland) record DU026-007

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Photo credits

William Murphy from Dublin, Ireland, Wikimedia Commons · CC BY-SA 2.0
National Inventory of Architectural Heritage
Raymond Okonski, Geograph · Creative Commons Attribution-ShareAlike 2.0
Maker not stated on source page, www.pinterest.com
Maker not stated on source page, commons.wikimedia.org
Infomatique, Wikimedia Commons · CC BY-SA 4.0
Maker not stated on source page, www.timeout.com

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