TreeAlive
‹ Sites and Monuments Record, Ireland

Sites and Monuments Record · Ireland

Earthwork

Carrownahaun, County Mayo, Ireland

The record

Townland
Carrownahaun
County
Mayo
Country
Ireland
First-edition OS map
Not indicated
Latest-edition OS map
Not indicated
Coordinates
53.80710, -9.09204
SMR number
MA091-001001-

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).

Get directions ↗

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

The National Monuments Service's description

In good pasture, located on a rise with excellent views to SW–N over rolling grassland, and an upland ridge to NE.
This enigmatic monument is not shown on the 1838 and 1920 OS 6-inch maps, although the souterrain (MA091-001002) it contains is indicated on the 1920 edition as ‘Cave’. It consists of a natural hillock which appears to have been scarped and modified, creating a tiered effect of a mound on top of a platform.
The base of the hillock forms a roughly circular platform (c. 55m NW-SE; c. 55.2m NE–SW) defined by a substantial scarp (H 2m at NW, 1.2m at SE). The platform is topped by an ovoid or leaf-shaped mound (32m NW–SE; 29.8m NE–SW; H 2.2m at NW, c. 2m at SE) with a level roughly oval top (10.8m NW–SE; 7.5m NE–SW) from which the sides fall steeply and broadly. The S slope is somewhat gentler and more ramp-like, and provides the easiest access to the top. The mound more or less occupies the centre of the platform, leaving a berm or terrace (W 11-14m) of clear space enclosing its base at NW–SE. The berm does not extend around the W side –here the mound is more broadly slumped expanding as far as the outer edge of the platform. This elongated W slope is where the souterrain (MA091-001002-) is inserted into the mound.
A slumped section (Wth 6m) of the platform scarp at the NW may be the site of the entrance.
Extending for c. 35m to NNW from this point there is a lower narrow elongation (Wth 8-10m) of the hillock, with a steep slope (H 2m) on the N side. This provides a natural routeway to the platform berm. At the NE of the platform a depression (Wth 4-6m), possibly a fosse, separates the platform from adjacent naturally rising ground. There is no evidence of an encircling fosse elsewhere.
There are a number of grassed-over sand pits in the vicinity of the monument, including two roughly circular, grassy depressions (max. dim. 15m & 6m) abutting the platform scarp at S–SE.
This is an unusual monument. When the souterrain was constructed, the mound may have been a form of rath, with the relatively small space at top used for habitation. Another possibility is that it is a prehistoric mound that was reused in the early historic period. It was first recorded by Knox (1911 221-2) who considered that it might be interpreted as ‘a very rough Norman motte and bailey’, if it were not for the presence of the souterrain.

Compiled by: Jane O’Shaughnessy

Date of upload: 11 February 2022

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