This Site forms the headwaters of the Cowagh River and consists of a plateau covered with highland blanket bogs, and the steep slopes of the Ox Mountains, covered by peatland. The diversity of habitats is high, with it being one of the few places in Ireland where lowland and mountain blanket bogs are juxtaposed. These bogs are important for regulation of water quality and river flow and provide habitat for the Greenland greater white-fronted goose (Anser albifrons) and the European golden plover (Pluvialis apricaria). The Owenduff and Lugnavreeghoge Rivers form a border between the Site and conifer plantations.