
Lough Mask Special Area of Conservation is a pristine freshwater lake and surrounding habitat known for its rich biodiversity, excellent fishing, and scenic tranquility.
Lough Mask Special Area of Conservation (SAC) is located in County Mayo, Ireland, encompassing the expansive freshwater Lough Mask and its immediate environs. Covering approximately 83 square kilometers, the area is renowned for its ecological importance, supporting a variety of habitats such as oligotrophic lakes, natural eutrophic lakes, and alluvial forests. The lake itself is one of the largest in Ireland and supports a diverse range of aquatic species including native brown trout, Arctic char, and freshwater pearl mussels, a critically endangered species. The surrounding landscape features limestone pavement and upland areas, which provide habitats for rare flora and fauna, making the SAC a vital refuge for biodiversity conservation in the west of Ireland. Historically, Lough Mask has been a hub for local communities and outdoor enthusiasts, with angling attracting visitors worldwide. Recreational opportunities include fishing, boating, birdwatching, and hiking along scenic shoreline trails. Notable landmarks include the ancient crannogs (lake dwellings) visible on the lake and the nearby charming lakeside villages such as Cong. The area's tranquil natural beauty, combined with cultural heritage, makes it a captivating destination for eco-tourism and outdoor recreation. Management of the SAC focuses on protecting water quality and habitats while promoting sustainable recreation.
Pristine oligotrophic waters with populations of native Arctic char and brown trout
Presence of freshwater pearl mussel beds, one of Ireland's rarest species
Historic crannogs offering a glimpse into ancient human settlement
Limestone pavements and bog habitats surrounding the lake
Critical habitat supporting endangered freshwater pearl mussels, indicators of good water quality.
Ancient man-made island dwellings dating back to the early medieval period visible on the lake.
Unique karst geological formations around the lake providing specialized microhabitats.