A long high ridge sweeps east from Whiteless Pike, via Wandope, Crag Hill, Sail (Lake District) and Causey Pike, crossing from Buttermere to Stair. Running parallel to the south is a lower ridge, a tenuous connection made centrally at Sail. This lower ridge consists of Knott Rigg and Ard Crags, and has a beautiful narrow and airy character. Ard Crags forms the eastern half of the ridge, rising between Keskadale and the side valley of Rigg Beck. It is sometimes referred to as Aikin Knott, the name of the rash of rock on the nose of the ridge.