1907 Notes on cremation mounds above Burn of Langa Dee in Orkney :-
" in "Langadae" , Yesnabie, the place of crematory has been marked or sectioned or divided off... by marchstones in the ground. The late W.Allan dug up some of these "aesir knowes" at Langadae some years ago - every seperate burning or cremation was distinctly discernible ... The burn or water courses have been conducted in a meandering manner about each mound. On each of these mounds there is and was a lump of white quartz - locally called hael-stone... "