
Knocknarea and Ballysadare Bay SAC is a protected landscape in northwest Ireland, renowned for its striking coastal habitats, rich biodiversity, and the iconic prehistoric hill of Knocknarea overlooking Ballysadare Bay.
Knocknarea and Ballysadare Bay SAC is a unique conservation area in County Sligo, Ireland, encompassing the dramatic coastal bay of Ballysadare and the prominent limestone hill called Knocknarea. The SAC protects an array of habitats including tidal mudflats, saltmarshes, and sand dunes in Ballysadare Bay, which are vital for migratory birds and local wildlife. Knocknarea itself is an imposing sandstone hill rising steeply over 327 meters above sea level, topped with the ancient megalithic cairn believed to be the tomb of Queen Maeve, a figure from Irish mythology. The combination of coastal ecosystems and historic landscape makes it a remarkable site for ecological and cultural exploration. Visitors can enjoy scenic hiking trails up Knocknarea that reward with sweeping views of the Atlantic coast, the town of Sligo, and the surrounding countryside. Ballysadare Bay is internationally important for its feeding grounds supporting a variety of waterbirds, including the light-bellied brent goose and oystercatchers, making it a hotspot for birdwatching. The area also supports diverse marine life and acts as a natural nursery for fish species. Knocknarea and Ballysadare Bay SAC offers a tranquil outdoor experience blending natural beauty, wildlife, and rich heritage — ideal for hiking, photography, and wildlife enthusiasts, as well as history buffs eager to explore the ancient cairn atop Knocknarea.
Knocknarea Hill and the Neolithic Cairn of Queen Maeve
Ballysadare Bay tidal mudflats and saltmarsh habitats
Exceptional birdwatching opportunities, including wintering Brent Geese
Coastal panoramic views overlooking Sligo and the Atlantic Ocean
A large, mysterious megalithic cairn at the summit of Knocknarea, associated with legendary Queen Maeve of Connacht.
Expansive mudflats exposed at low tide that serve as critical feeding grounds for wading birds and shorebirds.
Coastal saltmarsh habitats supporting diverse plant species and acting as a natural buffer against coastal erosion.