Crinkle Crags is a fell in the English Lake District in the county of Cumbria. It forms part of two major rings of mountains, surrounding the valleys of Great Langdale and Upper Eskdale. The name reflects the fell's physical appearance as its summit ridge is a series of five rises and depressions (crinkles) that are very distinctive from the valley floor. In Old English, cringol means twisted or wrinkled.
The nomenclature of the various tops is very confused. Traditional guidebooks tend to rely on what the eye sees and therefore focus attention upon the five ‘crinkles’ of the summit ridge. These are generally referred to as the first to fifth crinkles, but Richards starts in the north, Birkett in the south and Wainwright employs both conventions, depending upon the direction of travel. For clarity in this article the first crinkle will be taken as the southernmost top. On this basis, the second Crinkle (also called Long Top) is the true summit of the fell. The only other Crinkle with a definitive name is Gunson Knott, the fifth. To the north of the Crinkles proper is a depression and then the outcropping continues over Shelter Crags.
In recent times more systematic hill lists have been produced based upon topographical prominence and height, rather than mere visual appeal. Most relevant to Crinkle Crags are the lists of Hewitts and Nuttalls. These variously list the summit, the first Crinkle (Crinkle Crags South Top), and two tops on Shelter Crags (Shelter Crags and Shelter Crags North Top), but exclude the other three Crinkles.
The ridge of Crinkle Crags extends due south from its higher neighbour, Bowfell. Between the two is the col of Three Tarns, named for the small pools in the depression. Depending upon recent rainfall there may be anything from two to five tarns in evidence on the ground. From here the rocky outcropping of Shelter Crags is quickly reached.
Beyond the summit to the south the ridge descends over Stonesty Pike and Little Stand (a Nuttall) to the Duddon Valley at Cockley Beck. Two further ridges branch out from Crinkle Crags on either side of the summit, before turning south to run parallel to Little Stand. On the west, across the marshy trench of Moasdale is Hard Knott. To the east an initially indistinct ridge firms up on the traverse to Cold Pike. Between Cold Pike and Crinkle Crags, but generally included as part of the latter is the further Nuttall of Great Knott.
The view from the summit is very good: there are airy views of Great Langdale, Eskdale and Dunnerdale, with the estuaries of the rivers Duddon and Esk well seen as they enter the Irish Sea. There is a very good view of England's highest mountain, Scafell Pike, which lies just four kilometres away to the north west. Shelter Crags gives extensive all-round views.