From the main ridge of Crinkle Crags a low saddle juts out to the west in the vicinity of the southernmost Crinkle. This separates the basin of upper Eskdale from the head of the small marshy valley of Moasdale, down which the Moasdale Beck flows south to join the River Duddon at Cockley Beck. To the west of the saddle the ridge turns southward and gains height, rising over a series of rocky knolls to the summit of Hard Knott. The Moasdale side has gentle gradients but the western flanks above the Esk are fringed with crags. One feature on this side is the Eskdale Needle, (also known as The Steeple) a finger of rock detached from the main face. As the Esk and Moasdale Becks diverge, the girth of the fell increases, until a pair of side valleys intrude to nip off its southward progress. These streams, both named Hard Knott Gill, fall from either side of Hardknott Pass, beyond which the ridge climbs again over a series of crags toward Harter Fell.