
The Blackstairs Mountains Special Area of Conservation is a protected upland region straddling the border of Counties Carlow and Wexford in southeastern Ireland, renowned for its rugged landscape, diverse habitats, and rich biodiversity.
The Blackstairs Mountains Special Area of Conservation (SAC) encompasses a rugged chain of hills that rise sharply from the surrounding lowlands of southeastern Ireland, providing a striking natural boundary between Counties Carlow and Wexford. The mountainous terrain covers a mosaic of habitats including upland heath, blanket bog, and native oak and ash woodlands. This diversity supports numerous rare and protected species, such as the Irish hare, peregrine falcon, and several important bryophytes and lichens. The area's geology, primarily composed of Ordovician sedimentary rocks and granite intrusions, manifests in steep slopes, rocky outcrops, and deep glens that attract nature lovers and hikers alike. Historically, the mountains have been used for grazing and small-scale agriculture, with traces of ancient settlement patterns visible in scattered cairns and old field boundaries. A highlight for outdoor enthusiasts is the Blackstairs Mountains Way, a long-distance walking route that traverses the ridge line and offers spectacular panoramic views of the surrounding countryside, including glimpses of the Irish Sea and the Wicklow Mountains on clear days. Birdwatchers and botanists find the area especially rewarding, given the habitat variety and seasonal wildlife activity. The SAC designation ensures ongoing conservation efforts are focused on preserving these habitats and species while promoting sustainable recreational use. Its relatively low altitude and accessible trails make it an excellent destination for day hikes, wildlife observation, and cultural appreciation.
Blackstairs Mountains Way – a scenic ridge trail showcasing diverse upland landscapes
Important habitat for rare upland and woodland species including peregrine falcon and Irish hare
Historic ancient cairns and old field boundaries revealing past human activity
Remote steep glens offering secluded spots for wildlife viewing and photography
The highest peak in the Blackstairs range at 796 meters, offering panoramic views and housing a historic triangulation station.
A small upland lake nestled in the mountains, important for amphibians and a peaceful spot for nature observation.
Extensive peatland habitats supporting unique plant communities and acting as vital carbon sinks.