The Ward's Stone Sandstone forms the peaks and hillsides of Clougha Pike, Ward's Stone, Tarnbrook Fell, Wolfhole Crag and Mallowdale Fell whilst the Dure Clough Sandstone forms White Hill, Great Harlow and Lythe Fell. The Brennand Grit forms Bowland Knotts, Great and Little Bull Stones, Whitendale Hanging Stones and parts of Brennand Fell. The Pendle Grit forms almost all of the fells southwest of the Trough of Bowland and all of the southeast of the Forest from Winfold Fell to Croasdale Fell as far east as Gisburn Forest. It also forms Birkett, Waddington, Easington and Grindleton fells, south of Slaidburn.