Ring of Brodgar

Low ~1774 “[Stones of Stenness] not ditched about like ... [Ring of Brodgar]..but surrounded with a raised mound partly raised on the live earth, as the other was cut from it”
Wilson 1842 ” the completer... circle of the... Stones of Stennis... as you approach them you pass here and there a solitary stone or broken remnant, as if there had been... a connecting range or approach, all the way from the bridge to the great circle. The latter is encompassed by a still entire mound, surrounded by a foss [sic], and there is a filling up of the foss and a lowering of the mound, just at two entrance places, opposite each other, north and south.”