Introduction

Over 90 structures have been identified as probable houses dating to the Neolithic period in Ireland (Grogan 2996; Cooney 1999; FIGURE 1; TABLES 1- 3). While there is a considerable variation in size and form two principal types are discernible, the large rectangular buildings of the Early Neolithic and circular or oval structures that have a much wider chronological span. In the past some of these have been readily accepted as houses while other, generally more ephemeral, structures havc occasionally been classified as having more temporary or specialist functions

Introduction

Belfast Lough is a deep indent of the Irish Sea into the coastline of Northern Ireland. Its southwestern continuation is the Lagan Valley, which separates the steep scarp ofthe Antrim Plateau (height c. 300 m) from the hills of Co Down (c. 120 m) to the southeast. The River Lagan flows along this broad, undulating valley floor through thick deposits of glacial sands and gravels before emptying into the Lough at Belfast. Eight kilometres southwest of Belfast, the river passes the townland of Ballynahatty, a sandy plateau 100 ha in extent. This was the site in the 4th millenium BC of a small passage tomb, orientated to the northwest (Collins 1954: 48; Lawlor 1918: 16–19). Though now denuded of its covering mound, it provided the subsequent focus for a series of atypical passage tombs utilizing ever smaller settings of stone (Hartwell 1998: 33–6). Shortly after 3000 BC this was followed by a complex of large and elaborate east-facing timber structures (Ballynahatty 5 and 6). These in turn were eventually replaced by the earth and stone hengiform enclosure of the Giant's Ring, built around the original passage tomb.

Emain Macha, the legendary seat of the kings of Ulster, has long been identified with the Navan complex, 2.6 km west of Armagh. This complex comprises more than a dozen proximate, in some cases presumably associated. prehistoric monuments (Warner 1994). Excepting a number of outlying monuments, the major portion of the Navan complex is anchored between to large enclosures, each with adjacent sitcs associated with votive depositions in water. On the east is Navan Fort defined by a hengiform bank-and-ditch enclosure some 230 m across and containing two field monuments: Site A, a ring-work c. 50 m across with a low rise in the centre, and Site B, a 6–7-m high mound (FIGURE 1) . At the eastern base of the drumlin on which the enclosure sits is Loughnashade, a small lake from whose marshy edge four large Iron Age horns, at least one of which bore La The decoration, were recovered in the late 18th century (Raftery 1987).

Introduction

This article will concentrate on the current conservation works programme, which started in the summer of 1978 and is currently on-going. It will deal with the scope of the work on Skellig Michael and the management plan in place to preserve the site and still allow a reasonable number of visitors access each season. Here I can only give a brief overview of the works: in due course a series of volumes will appear and will record in full the major programme outlined below.

Medieval archaeology in Ireland has been described twice in the last 30 years as ‘in its infancy’, by Delaney (1977: 46) andby Barry (1987: 1). Neither was strictly correct. Ireland played a full part in the general English interest in medieval castles and churches around 1900, with Champneys, Orpen and Westropp in particular listing and describing them and relating to their historical and European context. In Ulster the medieval period had occupied a central place in archaeological research and excavation, rcmarkable within Europe and unique within the British Isles, from 1950 (Tope 1966).

While the archaeological study of the early modern period was generally underplayed within Irish archaeology before the 1970s, since that time there has been a significant increase in research on post-medieval and industrial themes. The origins, achievements, and recent developments of post-medieval and industrial archaeology in Ireland are discussed, with a consideration of the future of these disciplines.