Hen Comb has no direct topographical link with Mellbreak to the east, the two parallel ridges being separated by the wet valley of Mosedale. The head of Mosedale curves westward around the summit of Hen Comb, its source being at Floutern Tarn. This long slender pool has a grim quality in most conditions, being sandwiched between Floutern Crag and an embankment of giant boulders. Great Borne and Starling Dodd rise to the south. The western boundary of the fell is formed by Whiteoak Beck which, like Mosedale Beck, joins the outflow of Loweswater. Across the valley are Gavel Fell and Blake Fell, while its marshy source at Whiteoak Moss lies just below Floutern Cop.