TreeAlive
‹ Sites and Monuments Record, Ireland

Sites and Monuments Record · Ireland

Megalithic tomb - portal tomb

Brenanstown, County Dublin, Ireland

The record

Townland
Brenanstown
County
Dublin
Country
Ireland
Latest-edition OS map
Dolmen
Coordinates
53.25377, -6.15868
SMR number
DU026-007----

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 4 historical map sheets, the earliest the 1799 "Ireland." (David Rumsey Map Collection, Stanford Libraries).

Get directions ↗

This record in the National Monuments Service's Historic Environment Viewer ↗

The National Monuments Service's description

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

Borlase, W.C. 1897 The Dolmens of Ireland, 3 vols. London. Chapman and Hall.

Ó Nualláin, S. 1983 Irish portal tombs, topography, siting and distribution. Journal of the Royal Society of Antiquaries of Ireland 113, 75-105.

Turner, K. 1983 If you seek monuments: a guide to the antiquities of the barony of Rathdown. Rathmichael Historical Society.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Sites and Monuments Record data: National Monuments Service, Government of Ireland, licensed under CC BY 4.0. Record text is reproduced unchanged. National Monuments Service, Government of Ireland · CC BY 4.0
See your own family's places on a living map