Abstract
The site described in this paper lies on the Yorkshire Pennines, slightly over 1,200 feet O.D., half a mile north-west of Stump Cross Cavern and five miles east of Grassington (Nat. Grid 082640). The solid rock there is an eastward extension of the Great Scar Limestone, pitted by numerous swallow holes and clothed by a thin and intermittent mantle of clayey glacial drift. Only a hundred yards to the north and half a mile to the south-east of the site the Millstone Grit replaces the limestone at the surface. In the vicinity of the site the vegetation is dominated by Calluna vulgaris and Eriophorum vaginatum growing over a podsol or a shallow, highly humified, peat.