St Sunday Crag is the high point on the north-eastern ridge of Fairfield, which runs for two miles before descending to the valley floor behind Patterdale village. From the flat Fairfield summit a rough slope descends over the subsidiary top of Cofa Pike to the col at Deepdale Hause at c680 m (2,200 ft). This is a narrow point on the ridge, deeply scarred by pedestrian traffic. The ground now rises again to St Sunday Crag, soaring above the dales on either side. Beyond the summit there is a swift drop to the lower plateau of Birks and beyond this is the further satellite of Arnison Crag.