.. I found some five years ago that there were [magical rites] connected with Arthur’s Stone (Gower), though denied by my informant. But she “did hear that gels went and walked round it to see their sweethearts – a long time ago – and if they didn’t see him they took off their shawls and went on their hands and knees – nobody is so fulish now.” This from a young girl at Port Eynon.
Oh right. Just their shawls then is it. From p339 in ‘A Fisher-Story and Other Notes from South Wales’ by E. Sidney Hartland and T. H. Thomas, in Folklore, Vol. 16, No. 3. (Sep. 29, 1905).