The area also includes Old Pale hill, the high point of the northern mass of the Mid Cheshire Ridge, and Blakemere Moss, a lake around in length. Black Lake, a rare example of quaking bog or "schwingmoor", has been designated a Site of Special Scientific Interest (SSSI) and forms part of an international Ramsar site; Linmer Moss has also been designated an SSSI for its fenland habitat. The white-faced darter, a species of dragonfly rare in the UK, and marsh fern and white sedge, wetland plants that are rare in Cheshire, are found here.