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Sites and Monuments Record · Ireland

Promontory fort - coastal

Béal Deirg Mór, County Mayo, Ireland

The record

Townland
Béal Deirg Mór
County
Mayo
Country
Ireland
Latest-edition OS map
Not indicated
Coordinates
54.31202, -9.53348
SMR number
MA006-006----

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 1753 "Mappa geographica Regni Hiberniae" (David Rumsey Map Collection, Stanford Libraries).

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The National Monuments Service's description

Situated along the boggy indented coastline of N Mayo. It has a good view along the coast and is overlooked by higher ground to the S and W. The headland is flanked by a steep gully on either side and a grassy steep slope leads down to the sea to the N. A triangular N-facing headland measuring 30m long and 30m wide is cut off from the mainland by a single earthen bank and ditch. The convex bank is round topped and visible only near either cliff edge. It stands 1.4m above the base of the ditch which is flat bottomed and 4m wide at the top. Only a faint rise in the ground level outside the ditch suggests that there was a counterscarp bank. An entrance causeway crosses the defences near the western cliff edge. Besides this the site is featureless. The interior is flat and level and is partly overgrown with ferns and reeds. The land outside the site is wet and it slopes gently down towards the fort.

These descriptions are derived from the MA thesis of Markus Casey 1999 The coastal promontory forts of Ireland. A survey of counties Sligo, Mayo, Galway and Clare. Unpublished MA thesis, National University of Ireland, Galway. In this instance the entry has been revised and updated in the light of recent research.

Date of upload: 5 December 2018

Casey, M. 1999 The coastal promontory forts of Ireland. A survey of counties Sligo, Mayo, Galway and Clare. Unpublished MA thesis, National University of Ireland, Galway.

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
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