The M3 motorway continues to reveal new archaeological wonders as its broad corridor progresses relentlessly through Tara's Gabhra Valley. In the townland of Lismullin alone, in an attempt to steer a course to avoid a known barrow, souterrain, monastic site and the strategically-placed fortification of Rathlugh (recently subject to a preservation order), the motorway route has inadvertently impacted on several other previously unrecorded and equally significant archaeological remains. These include a ring-barrow, a complex of souterrains and, of course, an Iron Age temple.