Enclosure

The National Monuments Service's description

Located towards the western end of an east-west ridge with extensive views of the coast and Ireland's Eye. An aerial photograph (OS 8, 7654) shows cropmark evidence for a roughly circular univallate enclosure. Geophysical survey and two test excavations were undertaken at the site in advance of proposed development.

The geophysical revealed the presence of a large circular enclosure, (c. 70m in diam.) that abutted an unusual ‘avenue’ feature, defined by two parallel ditches leading away from an east-facing entrance. Initial archaeological testing (Licence no. 00E0732) consisted of a single trench situated diagonally across the site, that confirmed the presence of a ditch, entrance and archaeological material both internally and external to the main enclosure ditch. A decorated bone bead was recovered (Wallace, A. 2002, 115).

Further test excavation (Licence no. 07E0547) consisted of opening sections across the enclosure ditch and 'avenue'. The enclosure ditch ( c. 7m wide x 2m deep) was filled by a number of silty clay deposits that contained much charcoal, butchered animal bone and sea shell (oyster, mussel, razor shell, periwinkle, cockles etc.). The lower fills were waterlogged in nature and contained lenses of organic material including decayed wood and grass. A charcoal sample from the primary fill was dated to AD 687–887 (2 Sigma). A section was also excavated through the southern avenue ditch and this revealed a cut measuring c. 5m wide by 1.2m deep. It had a concave profile and was filled by silty/sandy clay deposits that contained occasional seashell, butchered animal bone and charcoal (Moriarty, C. 2008:477 www.excavations.ie)

According to the Portmarnock South LAP, the buffer zone for the monument will form part the open space within the green infrastructure network. The site is currently fenced within overgrown wasteland.

Compiled by: Geraldine Stout

Updated by: Christine Baker

Date of upload: 27 January 2015

References

Wallace, A. 2002 Maynetown. In I. Bennett (ed.), Excavations 2000: summary accounts of archaeological excavations in Ireland, 115. Bray. Wordwell.

Moriarty, C. 2009c Final report, archaeological Excavations at Portmarnock Mound (DU015:014) and the Maynetown enclosure (DU015:055) Co. Dublin (Licence no. 07E0574). Unpublished report submitted to the National Monuments Service, Department of Arts, Heritage and the Gaeltacht.

Moriarty, C. 2008 Rathlogan: pit In I. Bennett (ed.), Excavations 2005: summary accounts of archaeological excavations in Ireland, 193, no. 790. Dublin. Wordwell.