Concentric enclosure

The National Monuments Service's description

Situated on the summit of a broad hill that overlooks a W-E section of the River Boyne downriver from Drogheda. A gradiometer survey (23R0172) has identified a complex enclosure defined by three roughly concentric features that are likely to be fosses (Murphy 2023). The innermost enclosure (diam. c. 20m) which has a faint signal is off-centre within a subcircular enclosure (dims c. 45m N-S; c. 40m E-W), the perimeter of which at N cuts an oval enclosure (dims c. 20m N-S; c. 15m E-W), also with a faint signal. The subcircular enclosure is within a D-shaped area (dims c. 80m E-W; c. 65m N-S), the defining fosse of which originates and terminate at two points on the fosse of the subcircular enclosure at SW. This third enclosure is within a larger D-shaped area (dims c. 110m E-W; c. 90m N-S), the ditch of which arises from the fosse of the third enclosure at N and swings around to the E and SE before extending off to the W where it is probably morphing into a field system (ME024-094001-) with field drains extending from it to the S. Some lighter field drains are also attached to the inner subcircular enclosure making smaller plots (dims c. 30m x c. 20m). Some other field drains are attached to the largest enclosure at NE and SE but do not extend very far, and lighter, straighter N-S and E-W drain features further E are probably from an unmapped post-medieval system. The third and fourth enclosures are cut by a NNW-SSE service road to the Drogheda cement factory. (Murphy 2023)

See the attached grey-scale image from Murphy (2012, fig. 7)

Compiled by: Michael Moore

Date of upload; 4 May 2023

Murphy, D. 2023 Report on Geophysical Survey at Newtown Rd., Newtownstalaban, Co. Loth. Licence: 23R0172. Unpublished interim Report, ACSU